the death penalty, i wouldn't have saluted rick perry for overseeing 234 executions. and i would never have stood silently when war veteran steven hill was booed for revealing that he's gay. those incidents formed an impression of our party that we couldn't shake in the fall. governor bush also said this -- >> the dad who loved their children was worried that their children didn't have food on the table. and, you know, they wanted to make sure their family was intact, and they crossed the border because they had no other means to work, to be able to provide for their family. yes, they broke the law. but it's not a felony. it's kind of -- it's a -- it's an act of love. it's an act of commitment to your family. >> let me interpret. that means let me talk about hispanics. both because i believe in what i'm about to say and because if we don't do well with this constituency, we can't win in 2016. first of all, immigrants don't come here to malinger.

they come here to provide for loved ones, the kind of risk taker who takes risks to live here, embodies an entrepreneur, an entrepreneur that provides a benefit to our economy. our economy actually needs this influx. so what was the real message? to quote jack nicholson in "as good as it gets," sell crazy someplace else, because we're all stocked up here. thank you for watching. have a great weekend, and we'll see you back here next saturday. ahead, it is saturday. we're so glad to have your company. >> always good to be with you. 10:00 here on the east coast. 7:00 on the west coast. you're in the "cnn newsroom." we want to begin with the intense search for flight 370. >> nearly four days after

searchers detected that fourth ping in -- or at least they think it's a ping -- in the southern indian ocean, now the only sound around is the sound of, well, nothing, just silence. >> the big question is, have the batteries on the plane's black boxes died already? and is it now time to concentrate on the underwater search? >> tony abbott stressed again today he is confident the signals detected by a pinger locator are from one of the plane's black boxes. the pings were detected within 17 miles of each other, and that means the ten planes and 14 ships are focused on the smallest search zone ever. >> which makes you think we're getting closer. to put the search zone in perspective. look at this map, you see massachusetts and connecticut highlighted in red there. that is the size of today's narrowed-down search zone. you might remember at one point the search area was about the entire size of the continental u.s. >> yes. >> so certainly progress being made. >> certainly, a smaller area. even with this smaller air to scour, time is running out.

and the latest underwater signals were detected four days ago. and now we expect the black box batteries, the pinger locator batteries, at least, are fading, and may already be dead. >> retrieving the black boxes, even once they get to that point, is a massive task, as the prime minister of australia said. here's why. the debris from flight 370 could be resting as deep as three miles below that surface, which means from where those signals are coming from, you'd pass the statue of liberty, the eiffel tower, and the tallest building in the world, j uft to get down there. >> and you have thousands of miles to go. thousands of feet, rather, to go. let's go to perth and will rippley. will, the visual search is wrapped up by now. it's 10:00 p.m. there. we've got matthew chance. sorry. >> we do. >> what's the latest there? >> reporter: well, yeah, you're right, it's matthew, first.

the latest, it's difficult to come by any more information that's come out of the search area. over the past -- of course, the past 48 hours, basically, there's been press releases that have given us basic details about the search continuing and the size of the search zone. you mentioned it had shrunk to an unprecedented size of 16,000 square miles, which, remember, is still a vast bit of ocean. but in terms of, you know, concrete evidence that this is -- they're in the right place and there are more pings, i mean, we've heard very little. i suppose the real latest information is the further expression of confidence that we've heard from the australian prime minister, who's on an official visit to china. he's been underlining his confidence in the idea that the signals that have been listened to over the course of the past week, four days ago were the last ones, he's been underlying his confidence that they are, indeed, from the black box flight recorders on board the missing malaysian airliner. but apart from that, there's

been very, very little in terms of concrete developments in this search operation. >> so, matthew, thinking of that, have you heard any officials give any sort of timeframe as to when they may deploy some of these underwater drones? >> reporter: they're not giving an absolute timeframe about that. but what they're doing is this. they're saying, look, while there's a chance that they can still detect any electronic signals from the black box -- the beacons on top of the black box flight recorders, the pings, they're going to continue trying to do that. because when they listen to these pings, if they can find one, it could help them triangulate where in that area the black box flight recorders might be lying. and until they're absolutely convinced that there's no chance at all of any more electronic pings being detected, then they say they'll continue this

operation until that point. only after that will they resort to other equipment that they've got available to them, like the submersible blue fin 21, which can go down to the deck, which is believed the black boxes are at, and do a more active search for the black boxes. but that search will be very, very slow, indeed, and it could take days and days and days, possibly longer than that. and so, they're doing everything they can to make sure there are no more pings, no more data they can glean from using that technology before they move to the next stage of the search. >> all righty. hey, matthew, thank you so much. we appreciate you getting us apprised of what's going on there today. we want to talk to our experts about this now. with us is jeff weiss, cnn aviation analyst, who's also a pilot. and author of "extreme fear." and dan gehrly, a former naval oceanographer, as well. >> so, van, first to you. we know that there is one blue fin 21, this drone that can go down and kind of take pictures and scan for these items.

why not send it down now? i mean, the last ping was on tuesday. >> well, victor, you have to go back to how the australians have approached this operation since the very beginning when they really took the lead for the southern search. they've been slow. they've been deliberate. they've been methodical. and they're doing it the right way. so what air chief marshal young has said is they want to make sure they hear every possible ping before they move to the next phase, because once you move to the next phase, you can't hear any more pings. there are some search areas for the blue fin is being smaller than reported. based on the four pings we already have, the search on the bottom is somewhere between 75 square miles and about 600 square miles, depending on how they finally process those four pings, and that's a difference between a couple of weeks of blue fin operations and maybe two months. so they want to give every chance to hear any more pings,

if there are any, before they start the blue fin, because that will shrink the timeline much smaller if they can hear anything more. >> okay, jeff, you know, there are a lot of people on social media asking why isn't a submarine being used? is there a safety issue that we're not hearing about? does it come down to money? >> well, you know, i don't know if a submarine is really the appropriate technology to use in this situation. an attack submarine, for instance, is designed to go out underwater and listen for other enemy submarines. these are machines that are themselves moving around, trying to be evasive. what we've got now is a stationary target that's emitting a ping that's intended to be heard. so it's quite a different game, really. and so, really, the kind of technology they're using right now is the most appropriate. and it's not the kind of situation where you can just throw more assets at it and hope for better results. in fact, the reverse would happen. you'd get ships getting in each

other's way, perhaps picking up each other's acoustic signals and muddying the waters. you want one ship tows one pinger locator and try to keep it simple. >> captain gurley, i've been wondering this for a couple of days now. 26 countries involved. some of the most advanced nations in the world with militaries with lots of resources. australia, british, chinese, of course, the u.s. there's only one blue fin? i mean, i'm sure this company made more than one, sold more than one. where are the rest of them? and do these countries have any other pinger locators or resources that they can offer that are deployable? >> well, again, i think what this comes down to is how the australians and malaysians have requested services, because every country's that's stepped up is doing more. yes, more than one vehicle in the world inventory that can do this. the issue then comes down to the logistics of having lots of vehicles out there. because, you know, you can only put one or two of the vehicles on a given ship. you can't just load up the

"ocean shield." it increases the complexity greatly when you get more assets there. again, i'm confident that with where they're looking at now with the pingers, and the locations where they've heard the pingers, they've got the area down small, and it's tractable with the blue fin when they get it in the water. the nature of the types of operations are excruciatingly slow. it's very slow, very deliberate. and this will be a test of everyone's patience. >> okay, so on that note -- because it's a very good point, captain gurley, that you bring up -- jeff, let me ask you, how long do you think other countries -- like australia and the u.s., i would think china is in it for the long haul, because so many passengers were from that country -- but how long will we have this multinational team there? is there a point where you might see some of these countries saying, we're out? >> well, i think that's really the million-dollar question, because we're facing a long slog. and what's really unique about this case is that, remember, we have no wreckage, no debris, no real firm physical evidence of

any kind. remarkably, after having -- this is on course to be the most expensive search in history, and we have nothing. and what's more, there's really no hard, physical evidence that this is really even in the southern ocean at all. and the longer that we go without finding any wreckage or debris on the surface, without any kind of human intelligence or radar returns that indicate it went to the south, the question is going to start to increase, i think, whether this thing is really in the water at all. >> so, okay, we only have -- >> wow. i wish we had another ten minutes there. >> you're telling me that you think, it's possible this thing landed somewhere? >> well, i don't know. i think at some point we'll have to go back to our baseline assumptions and say, what did we take for granted? what did we assume as true that might not be true? really, there should be some wreckage. there should be some sign of an airplane. you know, i think it's going to be -- there's going to be a real

turning point, when we get to the bottom of the ocean, when we look at this spot where these pings were found, if we don't find anything or we find something that's not the black boxes, this is really -- this evidence has really been touted by the australians as, you know, very -- we're very confident it's mh370. if that turns out not to be the case, we'll be back to square one, and i think we'll have to ask hard questions, and one of them being, how much longer will we spend millions of dollars sending ships and planes to search this stretch of ocean? >> well, some would argue further behind than just square one, because you've searched now for more than 30 days and have no idea of where it is. jeff weiss, captain van gurley, thank you both. we'll continue this conversation, of course, throughout the hour and throughout the day. and jeff weiss brought up something that i know my twitter account and yours, as well, will be lighting up -- >> because people on twitter are already asking me, what if the thing handed? somebody asked that today. >> yeah. >> it's still out there, folks. all righty. a setback, too, for sea

world after a new court ruling. see what the decision means for the embattled park, where a killer whale took the life of a trainer four years ago. big-named websites, you use them every day, they are scrambling to patch this heartbleed bug. we'll tell you what it does and how to protect yourself. ♪ ♪ ♪ ben! ♪ [ train whistle blows ]

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16 minutes past the hour right now. we want to make sure you're on time this morning. we'll have so much for you on the missing airlines flight 370. zf. >> let's get to nick valencia for a look at other stories making news. good morning. >> good morning. we'll start in california with some new information on that deadly bus crash in northern california. cnn affiliate kovr spoke with witnesses who said the fedex truck was on fire before it rammed into the bus.

the bus was carrying students on their way to humble state university to visit the campus. among those, newly engaged couple michael and madison, chaperoning the students. the two had gotten engaged in paris around christmastime. one of the survivors said he escaped the burning bus by jumping out of the window. witnesses say the fedex company sideswiped another car before crashing into the bus. investigators are searching for a motive in this week's stabbing attack at a pittsburgh-area high school. an attorney for alex hribal said some type of bullying may have been a factor, but one official said that's not true. he faces 21 counts of aggravated assault. a federal appeals court say sea world trainers can not get into the water with killer whales like they once did. after the death of a trainer in 2010, osha barred staffers from performing with orcas in the

water unless there were barriers between them. the publicly traded company has yet to decide if it will appeal to the supreme court. we're getting a first look at the woman who three a shoe at hillary clinton at a speech in las vegas. you're looking at her there. she was identified as a protester, though it's not clear what she was protesting. for her part, clinton laughed off the incident which happened during an address to a cycling trade group. she said she had no idea it was happening, and had no idea waste management could be so controversial. check out the moves by hillary clinton. it's being called one of the biggest security threats the internet has ever seen. big-named websites are still working on a fix. it's called the heartbleed bug. the security hole allowed bugs from a security feature that was supposed to keep online communications private. facebook is no urging users to change passwords. i don't know if you change yours, but on that news, i changed my password last week. >> i'm with you. >> so far, no problem. vince you have to get on board.

>> i use the easy ones. i shouldn't have said that. >> yeah, why are you announcing that for? >> i won't say which easy ones. >> victor1. >> yeah, right. >> thanks. just ahead, the story that's still developing even overnight and into today, the search for mh370. the searchers are looking to pinpoint the underwater pings, and a lot more than just deep water to deal with. how the water temperature actually can affect the search. (dad) well, we've been thinking about it and we're just not sure.

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welcome back. if the search for 370 is zeroing in on the right place, it's a challenge to say the least in that stretch of the indian ocean. we want to give you some perspective about just how deep we're talking about here.

at the very top of this animation, that is sea level. and when people go scuba diving for recreation, they go down about 130 feet. the empire state building by comparison is just over 1,200 feet. and the bottom of the grand canyon, just over 5,200 feet. the deepest diving sea mammal gets to more than 9,800 feet. even further down, the wreckage of the "titanic" was found at a depth of 12,500 feet. and the towed pinger locator that we've been talking about, that's at about 10,000 feet below the surface. and the pings that have been picked up in the search for the plane are more than 13,000 feet below the surface. so although australian officials are optimistic that they're now looking in the right place, there are challenges when we're talking about these kinds of depths, about three miles down, in darkness, with silt that can be incredibly thick. it's a difficult environment to be sure. and it's been said actually that we know more about the surface of the moon than the bottom of

the ocean. christie? >> and that's something. we talked a lot about the search for the pings from flight 370's black box. to find them, searchers have more than deep water to contend with. tom foreman walks us through this. good morning, tom. >> reporter: hi, christie, hi, victor. we've been talking about the devices that have been put into the water there to try to locate where these pings are coming from. the towed pinger locator, that's produced four solid hits so far. there've also been attempts to put in things like sonobuoys to listen to see if they can pick up anything. any listening device in the water here will face one real challenge out there, at least. they have to get around it somehow. the challenge is what's called the sound fixing and ranging layer. this is about a half mile down. it's a naturally occurring phenomenon, and it's a layer where the sound moves less quickly than it does in the ocean below or above it. a lot for different reasons.

salinity, temperature, and if sound is coming up here, and it hits this layer. because this is slower, it could essentially bend that sound and make it go to a different angle than it was a moment ago, and then it may come out where you don't expect it at all. also, in some cases, it may come up, hit the layer and start ping-ponging between the top and the bottom of it. and by some theories, particularly with lower sounds, it may go many, many, many miles before it comes out. this may explain why a pinger that shouldn't be heard more than three miles away is being located in a range of some 17 miles, because as it's coming up, it's possible that these anomalies -- these strange things that happen to sound in deep water -- are affecting that signal. and they've got to overcome that and crush it down to the actual location before they go under water and start mapping very much.

victor, christie? >> tom, thank you. so just in the last couple of minutes, we had jeff weiss on, one of the aviation analysts, who mentioned something i got a tweet about a little while ago. diane said, is it possible the aircraft landed on land ever since it went missing, and it could still be intact? that is a theory people will not let go of. he said it could be possible, still. so we're going to talk to him and our panel about that in a moment. >> we've asked him to stick around. he was scheduled to leave, but we said, stay. we want to talk about this more. also, how do you retrieve wreckage that's deeper in the ocean than the height of the tallest building in the world? several thousand feet deeper. coming up, we'll ask ocean explorer fabien cousteau. [ male announcer ] this is jim. a man who doesn't stand still. but jim has afib, atrial fibrillation, an irregular heartbeat not caused by a heart valve problem.

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bottom of the hour right now on this saturday morning. i hope it's been good to you. i'm christi paul. >> make sure it's a good start. i'm victor blackwell. the australian prime minister says he's confident four signals detected by a high-tech u.s. pinger locator are coming from one of the flight 370's black boxes. >> the signals were all detected within 17 miles of each other. here's what that means. the ten planes and 14 ships are wrapping up today's search, focused on the smallest searched zone to date, which makes you think we're making progress here. >> let's put that into perspective. look at this map of the u.s. massachusetts and connecticut here, they're highlighted in red, that's the size of the narrowed search today. now, at one point, it was the size of the entire continental u.s. >> okay, david susie, a safety analyst and the author of "why planes crash" joining us now. >> and mary schiavo formerly

with the national transportation and safety board. and tom fuentes, cnn law enforcement analyst, and the former fbi assistant director. >> so, mary, you probably heard what jeff said a little while ago. you know, jeff saying, which i don't know that anybody would completely dispute. if we don't find anything, if they don't find anything in this search in the southern indian ocean, do we have to reopen the possibility that this plane landed somewhere? because i can tell you, people on social media, they believe that that is what happened. what do you say? >> well, i think we have to go back to the inmarch satellite data, unless we resort to crowd sourcing, which isn't a bad idea. we'll have to find the inmarsat data. >> jeff, it's interesting, because christi is getting the

people who believe that this landed -- i'm getting tweets from people who are quite critical of your comment, and they're asking you to defend it. we've been convinced, many people have been convinced over the last few weeks that because of inmarsat, and there's a northern corridor to southern corridor, and there's no way the plane went over china, went over afghanistan, those areas, and it wasn't detected by radar. so just take a couple of seconds and explain. >> okay, i think it's important for people to remember why it is we are searching in the southern indian ocean. and the reason is solely based on -- as far as we know, unless there's some other information we don't know about. but based on the information made available, it's based on an analysis carried out by inmarsat and released by the malaysian government. it was based on a new mathematics, and based on the new math, they were able to determine that the flight to the

south looked more like the data that they got than a northern flight would take, would have looked like, okay? now, they did not release the underlying data, and they did not release the method by which they were able to determine this. so we're really taking it on inmarsat's authority. however, they didn't say it fit better. they didn't say it was impossible to go to the north. however, the malaysian prime minister then took this statement and used it as the basis for a late-night announcement saying that he and the authorities had determined that the plane must be in the south. so really what it's based on inmarsat's authority, the authority of the malaysian prime minister saying it must be here. we, as the public, don't have any information that we have that would say it has to be in the southern ocean. but we've rely on the weight of the authority, of various governments, okay? so now, when the australian prime minister comes forward and says he's very, very confident

that this is the plane, that it's there, that we will find it within a few days, if that promise turns out to not bear fruit, then we have to start asking some questions. not only, okay, where is the plane? but, also, how much trust have we invested in these authorities who have assured us that they know what the situation is? and yet, their previous assurances have come up empty. >> tom fuentes, he brings up a good point. there have been transparency issues. with the malaysian government. there have been things that they've come out, you know, authorities have come out and said, yes, we think this is it, and there has been no credence to them. what do you say about the possibility that if they come up with nothing, we're starting from scratch? >> well, first of all, christi, i don't think this is a transparency issue. i think they're being open about the fact that these calculations were made. but, you know, honestly i don't have the expertise to agree or disagree with the way the

numbers were crunched and how they came up with this. this one, we are relying on the mathematicians from inmarsat and the other advisors that have come up with this idea of where this plane landed -- or crashed, i should say. >> dave, you wrote "why planes crash." what do you think about jeff's questions about this plane -- the flight ending in the water? >> well, i'm really glad that we have jeff to bring these points up, because it's so easy to get on a one-track mind and just look at the one thing you think is the conclusion. so that's really important. but i would have to disagree with jeff. it's neither math nor is it new. the concept of the north versus the south hemisphere is based on a concept that's been around since doppler shift. and doppler shift has been used for many, many years to determine range and various effects. the doppler shift is different in the northern hemisphere than it is in the southern hemisphere, so that's the reason these were used. it wasn't based on a

mathematical figure. it was based on the difference in the doppler shift, which is a sign wave, basically, that shrimps or grows with the direction it goes. so while i respect certainly jeff's opinion, and i think it's really good that it's being questioned -- because who knows? maybe it wasn't done properly, since it wasn't released to us how they got this. but i'm just glad he did that. but i'm convinced that it is in the south, and i'm still convinced these are pings from the aircraft and from the black box. >> hey, mary, you know there's a belief that certain countries may be holding information that they have close to the vest, because they don't want other countries to know what resources they have with some of the information they have come up with. how prevalent do you think that has been in this investigation? and how much do you think all of these countries are holding back from releasing, how much information? >> well, i think they are holding back, and that's why i'm

glad that jeff did bring this up. i mean, i don't agree. i think it's in the ocean. but i like that jeff brought this up, because it's very clear we have some big holes and problems, and a bit of a cover-up over the malaysian radar and the indonesian radar. now, we've heard dis -- disconcerting disconnects between civilian radar coverage, control and military in malaysian, and just recently they said we tracked the plane -- we did see the plane head over the malacca straits, and the indonesian radar, information is they completely went around indonesia and headed to the south. now, if that isn't true, or that's in dispute -- and believe me, there's been so many different stories -- i mean, i think they have a credibility problem. but if there is no such radar tracings, et cetera, then, you know, jeff's story would have more credence. but i think the biggest problem is we haven't been given all the information on the radar tracks through malaysia and indonesia. >> i want to go to david susie,

this blue fin, apparently there is one in this arena, this theater. is it time to send it down? i mean, the last ping was four days ago. >> yeah, i think it is. i don't quite understand why it is they're taking so long to put that bluefin in, because at this point, there's no pinging going on, they're backtracking -- i've been tracking where the "ocean shield" has been going on the marine tracker. and you can see that it's just kind of going around in the same areas within 20 miles or so, looking for pings. they're not there anymore. it's been four days, let's move on. >> all righty. mary schiavo, jeff weiss, david susie, we appreciate your expertise and perspective. thank you for taking time with us. >> thank you. imagine standing on a mountain and trying to spot a suitcase on the ground, and now imagine doing it in the dark.

that's the kind of challenge the search crews are up against as they try to find the black boxes from 370. >> we're talking with explorer fabien cousteau, jacques cousteau's grandson, next about the challenges of searching the deep sea. what he says about this part of the country -- or the world, rather, that we need to know about. [ ambient street noise ] ♪ ♪ ♪ abe! get in!

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it's a race against the clock for search crews trying to find missing malaysian airlines flight 370. the australian prime minister says that he's confident that four sounds, four pings potentially, detected by the "ocean shield" are from one of the plane's black boxes. >> but the hard part, the signals are coming from about 15,000 feet below the surface. >> now, let's bring in ocean explorer, fabien cousteau, who's speaking exclusively with cnn. you'll recognize the last name. the grandson of famed pioneer jacques cousteau. nice to have you with us. >> good morning. >> good morning. >> i wonder if you could describe for us, because few people know deep-water exploration like you and your family. what is the terrain there? what's it like that deep under water? >> well, i wish i knew. i don't think very many people do know, and that's one of the big challenges is even knowing the topography in that area is something new to everyone, and all the people that are

searching for the plane. you know, the oceans represent about 3.4 billion cubic kilometers of volume, within which we've only explored less than 5%. this is one of the most remote areas that we just don't know anything about. >> so this is truly new territory for explorers. what kind of tricks does water play that deep on what you hear and what you see? >> well, sound travels quite -- quite a bit further under water. and with the topography and the terrain being as varied as having very deep canyons and high mountains under water, there are all sorts of reverberations that can trick our technology. and that just further complicates the issue. of course, different temperatures of water at different levels also bends those sounds. >> it took decades to reach the wreckage of the "titanic." two and a half year to get the

black boxes from the air france crash. how does this compare to those? >> well, this is just as complicated, if not even more so, because we don't even know that we're searching in the right place. and although there are many countries and many private organizations that are pitching in and putting all their resources into this, it's like looking through the front-door keyhole to see what's going up in the attic. it's a very, very difficult endeavor, to say the least. >> speaking of a difficult endeavor, i understand you've got one coming up. i would think. mission 31. you are going to live under water for 31 days in june? tell us about this. >> yeah, so we just announced it this week. we're splashing down june 1st, and i'm taking a team of six aquanaughts to live under water, and diving 10, 12 hours a day to

bring back all sorts of wonderful -- wonderful news, i hope. >> i'm sure the news and the discoveries will be amazing. what does it do to your body? >> well, and that's one of the things that we'll be looking out for. there's just a lot of unknowns. there have been fewer aquanauts in history than astronauts, and one thing that nasa astronauts do nowadays is train at this marine laboratory first, so that they can feel and experience similar parameters to what it's going to be like to live in outer space. so you can call this the inner space station, with one exception. we can actually communicate via wi-fi through skype in the classroom and our nokia lumia devices to go and share in realtime with the world, with the public, what's going on down there in our new discoveries. so we're excited about that. >> how big is your team?

>> the total team is about 24 people. so for every six people down below, you have about 18 people top side to make sure everything goes just right. we have to, of course, train hard physically beforehand and, of course, make sure that we're ready to be in a -- living in a small, enclosed environment, akin to a new york apartment. >> oh, hey, listen, really quickly, only a couple of seconds left. i did want to ask you, based on everything you know about flight 370 and the investigation into it, do you believe that they're searching the right area? >> it's really hard to tell. you know, the evidence just isn't there yet, and although they've found some pings, it's still very disparate information, and i certainly hope so despite the efforts and money put toward this, and for the families who have lost loved ones. >> absolutely. this technology is being used in ways it was not designed to be used. fabien cousteau, thank you so

much for talking about 370, and good luck on mission 31. >> we'll be watching. >> thank you very much. >> thank you. so, stephen colbert is somebody else i know you'll be watching, because he's making the switch from cable to take over for letterman on "the late show" next year. what do you think this means for the show? >> hmm, what does it mean for colbert? will we see the character or the real stephen colbert? a live report next. ♪ ♪ ♪ [ female announcer ] with five perfectly sweetened whole grains... you can't help but see the good.

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legendary comedian and talk show host david letterman says he is retiring from the "late show." >> and a lot of people are wondering what this means for stephen colbert. how is he going to change things up? is it going to be the right thing? >> a lot of people are questioning it. alexander field joins us. what are you hearing? >> reporter: the truth is most of us doesn't know much about stephen colbert, because he has kept himself in character for so many years. we hear he will be dropping that character. ever since 2005 when he started his show "the colbert report" on comedy central, he has played that conservative pundit we've all come to see so often, a guy that's attracted a lot of fans. when he takes over the "late show" sometime in 2015, he says he'll be just showing us the real colbert. and a lot of fans are starting to wonder who that guy is and what the show will be about. here's what the fans are saying.

>> i trust that he'll still be great. i've seen him out of character before. and he is great. he's terrific. >> it will be really nice to see him doing his own personal character. >> reporter: all right. letterman announced his retirement, and just a week later, the "late show" announced stephen colbert would be taking over. letterman is not stepping down until sometime in 2015, so some people thought the announcement would take a little long of. people were throwing around different names. colbert is not a shocking pick. he was one of the names bandied about. rush limbaugh is saying he's a partisan comedian, he could alienate some of cbs' viewers. clearly, cbs does not think that's going to happen. however, we really don't know a lot about what stephen colbert's "late show" will be about. they haven't named the producers, the location, and they're talking about the creative elements, so we have a lot to find out. >> yeah, we don't know which day letterman will leave and the next day colbert will start.

he said sometime next year. >> sometime. >> alexander field, thank you. >> thank you, alexandra. so, you know, when disaster hits, a lot of time people forget about pets. >> yeah. >> and see how our "cnn hero" steps in to help when their owners cannot. sked people a simple question: can you keep your lifestyle in retirement? i don't want to think about the alternative. i don't even know how to answer that. i mean, no one knows how long their money is going to last. i try not to worry, but you worry. what happens when your paychecks stop? because everyone has retirement questions. ameriprise created the exclusive confident retirement approach. to get the real answers you need. start building your confident retirement today.

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>>. >> when a fire forces a family from the home, they can depend on red cross or family members. >> but pets don't have that option. this is where our "cnn hero" steps in. >> i was a firefighter in philly for seven years. you get to the scene, and the firefighters are there to put out the fire. the salvation army and red cross assist the people once the fire is out. but there just wasn't anyone there to help the other part of the family. and i would see how upset the people were about their animals. you know, where is my pet? and then, where is it going to go? these are people's children. they've just everything, they shouldn't then be forced to lose their pets, as well. >> we have a dog displaced by a

fire, a chihuahua. i'm headed to the scene now. we respond 24/7, 365 days a year. we do for pets what the red cross does for people. we went into the basement, and found the dog hiding behind something. once the fire's under control, we're able to look for the animals and bring them out. hi, baby. come here. the headquarters is my house. we've helped close to 1,000 animals. the owner said she's pregnant. everything they need, we'll handle for free for them. when we reunite the families, it's a good thing. it's like this void has now been filled. >> hey! welcome home. >> my hope is that it's a fresh start, that they can move forward together. nina and nana are home. after going through such a sad thing, it's so good to have a happy ending. >> bless her heart.

they are our kids. we're so glad that you watched us today. >> thank you so much for being with us. we'll turn it over now to our colleague fredricka whitfield now for more in the "newsroom." hey, fred. >> good morning. welcome to the 11:00 eastern hour of the "newsroom" which begins right now. 36 days now at malaysia airlines flight 370 vanished, strong words expressing confidence that one of the black boxes has been detected. listen to what australian prime minister tony abbott said about four pings heard in the indian ocean over the past week. >> they've been numerous, numerous transmissions recorded, which gives us the high degree of confidence that this is the black box from the missing flight. >> but those signals are fading fast, and the batteries powering the pingers could be dead very

soon, if they haven't already died. here's what we know right now -- the pings that have given officials so much confidence were heard last saturday, and on tuesday. but nothing has been heard since. 14 ships and 10 planes were involved in today's search. more than 1,000 miles off the coast of australia. crews right now are focusing on a search area that's about 16,000 square miles. that's about the size of massachusetts and connecticut combined. the australian prime minister said the next step in the search will be dropping in submersibles that can go very deep into the ocean. matthew chance joins me live now from perth, australia. so, matthew, when are they going to start using those deep-water search tools? >> reporter: hey, fredricka. they've not given an exact timeframe for when they'll start doing that. but they've said for the moment they're going to stick to this phase of the search, which is the phase using the towed pinger locator to try and find any underwater signals that have been emanating from the

emergency beacons on board those -- attached to those black box flight recorders. the last time, though, that they had any contact with anything, they're assumed to be a part of the black box flight recorders, was tuesday. so four days have passed since then. they've still not given up. they're still continuing to work that area of 16,000 square miles, but still remember, it's a vast area of ocean even though it's much smaller than the area they were working a week before, even a day before. they're making progress in that sense by excluding some of that search area on a daily basis. but the key point is this, until they're convinced, they're not going to get any further electronic signals, they're going to continue doing this kind of search, only then will they launch other equipment like those remote-controlled -- or those autonomous submersibles that will continue to look for the black box recorders, but at a slower pace. >> and on what basis do they shrink the area, the search area? >> reporter: well, it's not

based on any new data they're getting. i think it's this, that they've worked out approximately where they believe the most likely area is that this malaysian airliner went down, and then bit by bit, day by day, using ships on the surface and using planes overhead, they're managing to exclude certain parts, certain tracks of that search area, and inevitably that makes the search area smaller. i don't think they're getting new data, and on the basis of the new data, we think it's over here. that's now a phase that's now passed. they're working through what they've got. >> all right, matthew chance in perth, thank you so much. so as the search narrows and australians get more confident, malaysian officials seem to be getting less confident. let's bring in our panel this hour, cnn aviation analyst mare schiavo, a former inspector general for the u.s. department of transportation. she's now an aviation attorney who represents families suing

airlines and crash -- in crashes and disasters. and allen diehl is former air force accident investigator and the author of a book about aircraft investigations. and david susie is a cnn safety analyst and the author of "why planes crash." so ten days a of they said they cleared passengers on flight 370, malaysian officials now say they can't clear anyone. is there a problem with the various malaysian agencies, or is this because it's simply unchartered territory, mary, to have all these different mixed messages? >> well, i think it's probably inexperience, but also just inexperience of dealing with transparency issues. i mean, malaysia is not used to having to answer to all sorts of public questions, answer to families of victims, and so they make pronouncements, and it seems like they're genuinely surprised when they're challenged on the pronouncements that they make. when they're challenged, well, what's your evidence of that?

and then, on this thing about first clearing the passengers and saying, oh, no, wait, we changed our mind, everybody is a suspect, i think they were responding to how they changed the public outcry of how they could clear the passengers in just a week. >> allen, in your view, has this set back investigations in any way when at first all the passengers were cleared and now, you know, it's open season on anyone who may have been on board that flight? >> well, certainly in some ways it does. it creates a lot of anxiety for the families. but i'm not sure. i just hope they're doing what they say they're doing, and that is they've gone to interpol and looked at the records there, looked for pilots' license, somebody has said that there's one flight engineer dead-heading on this. all of the people, including the people who had access to the aircraft, need to be checked out. >> and, david, how much of a

difference does it make that you have different bits of information coming from malaysian authorities on the path of the plane, on whether all those who knew the pilot say he's a good guy, there's no reason to be suspicious. i mean, there are so many different messages coming from so many different directions. this has to be confusing, if not for family members, then really for the flying public. >> it really is for both. but there's something more indicative here going on, and that tells me that there's some miscommunication going on within the investigation itself. so if they can't communicate publicly in a consistent manner, it makes me question whether or not they can communicate amongst themselves as well. another thing i'm concerned about is the fact they have not issued the preliminary report, which is a requirement of the international civil aviation authority. they have 30 days to do that past the date of occurrence. we're beyond the 30 days. we haven't heard a word. it's not just a matter of, gee, they don't think they have to

release in information. it's required by a civil law, an agreement made between all the countries, and they signed up for that, and they said, yeah, we'll do this, and they have not done that. we don't have any information that is required to be released. >> so, mary, what does that tell you? >> well, unfortunately, the international civil aviation organization is more aspirational than regulatory and punitive. and so, when you don't comply with icao requirements, unfortunately it doesn't have a lot of teeth, it doesn't have a lot of bite. and other countries that are signatories to the conventions are not likely to take punitive actions against malaysia. so they will get away. i mean, there's not really any police on the beat to enforce the production of these reports, so they're probably going to -- you know, it's not going to be an immediate effect from that, other than to cast additional doubt on the fact that they can carry out an international icao standard investigation, and they

should be relying more and more on the australians, is what should happen. >> and then, alan, while there's this lack of confidence in the malaysian authorities, or at least the information that's being communicated between these agencies, do you have confidence in the confidence being expressed by the australian prime minister? >> well, obviously, he's a politician, but i'm sure he's being briefed by smart people in australia. i've gone down three times to work -- training in the air safety investigators. they're very competent. they're much like the ntsb, only on a smaller scale. i feel sure they must be advising their prime minister on what he should say and can say. so, yeah, i have a lot more confidence like everybody seems to do in the australians than i do in the malaysians. >> all right. alan diehl, mary schiavo, and david soucie, thank you very much. appreciate it. the next step in this search will go miles deep under water. how will they look? and particularly, without a shred of sunlight or evidence on

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>>. >> four pings heard in the indian ocean have narrowed the search area for flight 370. it's not nearly as wide as it was before. but it is still just as deep. crews will need a new set of tools to search nearly three miles now down to the ocean floor. rosa flores has more. >> reporter: four times investigators have heard pings that are consistent with the signals coming from the missing jet's data recorders. >> i believe we are searching in the right area, but we need to visually identify aircraft wreckage. >> reporter: that's where this probe comes in. it was sent to the indian ocean to scour the ocean floor. it's called an auv, an autonomous underwater vehicle, and it uses side-scan sonar.

you can see it right here. it creates that picture. it's also equipped with a gps system. you can see it right over here, and, of course, that lets the crew know where this probe is at any point in time. it has been used before to identify and help recover plane wreckage. it would be able to narrow the debris field. for demonstrations purposes, it's tethered. that would not be the case, of course, in the indian ocean. once this launches onto the water, you're going to see, it floats, it's buoyant. >> our particular auv has about a 20-hour endurance. to get down to a depth of 4,500 meters, it takes about two hours. >> reporter: this is an auv made by bluefin robotics, as it searches under water. it's the same auv in the indian ocean ready to dive more than 14,000 feet in search of the missing 777. this animation shows how it moves along the ocean floor, as

if it were mowing a lawn, creating a map of potential plane debris. the auv is also equipped with a still camera, essential to the search. >> so once we get a debris field, we'll have the auv run a pattern over the debris field, and that will pretty much identify the airplane for sure. >> are you getting a signal on the auv as well? >> reporter: it can retrieve the black boxes from the ocean. >> you put your two cameras here on your pilot monitor and co-pilot monito >> reporter: the rov can operate in the deep sea where humans can't and may be the only chance of recovering the flight data recorders and any evidence of what happened to mh370. rosa flores, cnn, new york. okay, again, the australian prime minister saying today search teams are trying to pick up the signal again with the towed pinger locator, the tpl.

and once they have exhausted that option, they'll start using those underwater drones. to help explain, i'm joined by oceanographer sylvia earl, an explorer in residence at the national geographic society, who has led more than 100 expeditions and logged 7,000 hours underwater. good to see you, sylvia. >> great to be on board. >> all right. so let's talk about that next step, if, indeed, they find the wreckage. i'm trying to locate it. that's where this bluefin comes in. explain to us what that is. >> well, that is a piece of equipment that does assist in locating where the wreckage may be. that's the critical first step. once that is done, then other equipment can be brought in and remotely operated systems -- >> explain to me how the bluefin system works. how does it help locate? >> using sonar to be able to see with sound and pick up images in a wide area. so that you can zero in on a

specific site. >> now, i understand it moves very slow. i heard a navy commander explain it like the parallel is it's like taking a stroll, a walk on the sidewalk, but every now and then you stop and take pictures. that's the rate of speed we're talking about for the bluefin. so it will take a long time. it's not just a matter of hours, but maybe even days? >> oh, much more than that perhaps. >> really? >> it's 16,000 square miles of ocean. it's a lot of territory to cover. it took a long time to actually recover the air france debris, even though they knew much more precisely where the plane went down. >> huh. so in this case, it could take weeks, if not months, for the use of this bluefin, which takes a long time? and it's not just relying on the pinging device then, right? when you say it relies on, you know, a sonar-kind of surveillance, explain what it's picking up, how it works, how

this is an asset. >> well, to be able to see with sound, sonar enables, without a camera, an overall much wider area to actually understand either the configuration of the sea floor below or side-scan sonar, to be able to see what images there may be laterally. and some sonars now are really very good in terms of getting a definitive image, almost a picture of what's there. but it's imaged with sound instead of with a camera. and once they've located the debris field, then they are able to come in with equipment, able to recover pieces. >> and then optimistically speaking, say that apparatus actually picks up, locates the wreckage, and then it's a matter of trying to retrieve it. let's talk about the potential recovery once something is located. something interesting enough to want to retrieve. we keep hearing about rovs.

we saw it in the previous piece, remotely operated vehicles, that will be sent to pick up the wreckage. it actually has a claw on it. >> yes. >> to pick up pieces. help us understand how that works. it seems like a simple concept, you know, a claw picks up something and then brings it. but it can't be that simple when you're talking about three miles, potentially, deep. >> well, the power has to be conveyed down a cable to be able to operate and provide power to the system below. and then, so it's a tethered system. that is, it has a cable going all the way from the ship on the surface, conveying all the way down to three miles below. there are not many pieces of equipment in the world able to do this. >> yeah, and then talk about the accuracy. i mean, clearly, things move, you know, as something is descending in water. you have currents, you've got waves, you've got, like you said, you have sound that will

make items move. so as this cable is descended and this claw is descended, is it as simple -- i shouldn't say simple -- but we're talking about somebody with a remote control -- remote control of a car, say, for example, they're trying to manipulate this claw, this cable? >> well, it's pretty stable once you get to the bottom, because it has a deployment system that takes up the slack from all the way back to the surface. and then there's a short cable that runs from the tethered management system, it's called, that enables it to have very steady operations. so once they find the debris, once they find the wreckage, it's more realistic to think you could actually recover the black box. first, you have to find it. and this system is one of several that might be available in the world. >> yeah, and we are getting ahead of ourselves, because, yes, you have to find it first. so now, that's an rov that's

unmanned. say there's a call in for the type of equipment where it would be manned, a submersible with a person inside. help me understand what that is, what that option is, and at what point would that be an asset used? >> well, having the human presence there can make a big difference. to take the human mind as well as remotely operating can give you a real edge in terms of understanding what's there. there are only a handful of countries, though, that have manned submarines capable of going as much as three miles deep. the united states has the elvin, just on the edge of being able to go as deep as where we imagine this wreckage to be. france has a system called notill. russia has several 6,000-meter subs, especially the mir 1, mir 2. japan has the xinghai 6,000 and

china has the sub. any of these could be used once they find the actual site. >> all right. >> you know, it shows how little -- how ill-prepared we are to operate in the deep sea. how many airplanes can go 7,000 meters high in the sky? i mean, that's where passenger airplanes go. we've invested in aviation and aerospace, and we've been neglecting the ocean. >> well, still unclear exactly what assets, what countries will commit these kind of assets that are available. but again, they've got to find that wreckage. sylvia earle, thank you so much. appreciate it. >> thank you. straight ahead, more on the flight for the search of 370. but next, new details in the bus crash that killed high school students and chaperones. what witnesses say they saw before that terrifying collision. [ male announcer ] this is jim. a man who doesn't stand still. but jim has afib, atrial fibrillation,

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all right. we'll get back to the mystery of the malaysia be flight. but first, other news. here's nick valencia. >> hey, good to see you again. lots of news to catch up on. let's start in california where there are new developments in the deadly bus crash in northern california. cnn affiliate kovr spoke with witnesses who said the fedex truck was on fire before it rammed into the bus on thursday.

the bus was carrying prospective students on the way to humboldt university to visit the campus. ten people were killed, five of them high school students and 30 injured. our affiliate kxtv has an emotional reunion between a surviving student and his parents. >> oh, my. >> good to see you. >> reporter: on his way to freshman orientation at humboldt state university, harley hoyt expected to see the first glimpse of his future, but instead -- >> chaos is what i saw. >> reporter: sitting in the back of the bus, harley didn't see the fedex truck coming. but he heard the screams of the others up front. >> once we hit the impact, the front of the bus, like, was on fire. and, like, smoke started coming through the whole -- the whole bus. >> reporter: harley was able to break open an emergency window exit just in time. >> i looked out the window and the fedex bus is already on fire. i said, all right, we'll blow up any second. >> reporter: getting out of thes about was just the beginning.

>> we crossed interstate 5 and got on the southbound side. after that, everyone was, like, laying on the grass, just -- people were out of it, people were crying, people were, like, pulling their hairment people were screaming. >> reporter: harley suffered only minor injuries, something his parents had to see to believe. >> definitely had an angel with him. >> a special gift that was given to us. >> lucky is an understatement. bless sd an understatement. i don't have word to describe how i feel. i'm grateful i'm alive. >> grateful indeed. that's gabriel rojas from kxtv. it appears heartbleed is worse than initially thought. it's not just websites. voicemails, phone calls, any gadget to connect to the internet has been compromised. the bug has been around for more than two years. for now, you're advised to change passwords. moving on to sports, the masters taking shape without two notable names. no tiger or phil mickelson.

look at bubba watson. woods is out recovering from back surgery. mickelson just didn't make the cut. bubba, 2012 champ, is ahead of adam scott and 20-year-old jordan snead. special stop today for the duchess of cambridge during a royal tour in new zealand, visiting a children's hospice. katherine had a date party with a 6-year-old girl whose mother has terminal cancer. later she joined prince william at the cambridge town hall where they laid roses at a war memorial. baby george not with the royal couple on this leg of the tour. i'm sure if he was, there'd be a lot more eyes on the royal couple. >> i know, baby george is the hit. >> yeah. what a sweet little exchange there, a tea party with the 6-year-old. >> yeah, she will, and the family will indeed, remember that forever. and another story, nick, that has a lot of folks talking. i know it caught your attention. david letterman's retirement and replacement, stephen colbert.

brian selter tells us what's next for cbs and late-night tv. >> reporter: hey, fred. it's been quite a few days for fans of late-night tv, because we are seeing all of the changes happen in a row. first david letterman announces retirement and a week later stephen colbert says he'll be the one taking over. he joked about it in character on his "colbert report" on thursday night and said those are very big shoes to fill. of course, he didn't step out of character to acknowledge he's the one filling them. so we will see how colbert starts to transition in the next few months, or maybe in the next year or so, into his own self and not the conservative blow-hard character that he pretends to be on comedy central. but now, there are other jobs that will have to be filled as a result. comedy central's got to figure out what they're going to do at 11:30. "the daily show with jon stewart" will still be at 11:00. they now have that time slot to fill. there will be a race by any number of comedians to raise their hand for comedy central. and i do wonder what cbs is

going to do at 12:30, because right now, craig ferguson is the guy that follows david letterman. but it seems like he's been pretty visibly snubbed by cbs since they've gone out and hired stephen colbert instead. the head of cbs, les moonves, said 12:30 is an open question, that that's up in the air, which suggests craig ferguson could leave in the future, and poe den potentially for another time slot to fill. fred, back to you. >> it sounds like a big problem or a challenge, i should say. all right. thank you so much, brian. technology used years ago to listen for submarines is now being used in the search for the missing plane. how sonobuoys work when we return. and later today, join us for dr. sanjay gupta special. he's reporting live from west africa at 4:30 eastern time with the latest on a deadly outbreak of the ebola virus.

in the air and below the deposition, the flight for missing flight 370 pushes into another day. >> there have now been numerous transmissions from the black box, or from what we are confident is the black box. >> but even with that optimism, time is running out to retrieve the black boxes before the signals fade. and the loved ones of those on board want answers. >> the real challenges in looking at this is that the fox is very much in charge of the henhouse, and it makes us question that every step taken. >> we'll have the latest information as it becomes available, as our live coverage of the mystery of flight 370 continues right now. today, crews desperately tried to detect more pings that officials believe are coming from the plane's black boxes. search teams are focusing on an area that's about 16,000 square miles now. that's about the size of massachusetts and connecticut

combined. 14 ships and 10 planes are involved, and they're working more than 1,000 miles off the coast of australia. and the australian prime minister said, and you heard him, even with the confidence, the search is likely to continue for a while. search teams are stretching the bounds of technology for this mission. this week, sonobuoys dropped from an airplane were used to hunt for the pinger. sonobuoys were designed for maritime combat, not search-and-recovery. they are dropped out of a plane and plummet into the sea with a parachute. our chad myers takes a look at how these sonobuoys work. >> reporter: fred, honestly, just great pictures, great video of these sonobuoys being thrown out of the back of these airplanes, p-3 orions, this one was an australian p-3, landing in the water, opening up the float-on-top, ballooning out, and this thing sending its

listening device, microphone, down a thousand feet. it's a wire, essentially an antenna. the microphone right here listens for anything -- whales, voel c volcanos, submarines -- and that sends the signal up to the wire, from the wire to the airplane, as we move this along, there goes the signal, one after another after another. so all it does is sits there and listens. when it hears something, it sends the signal up. so fairly low tech, but very, very effective when it comes to dropping these every few miles. the plane flying around and listening for pings. you can do -- cover a lot more territory throwing them from an airplane than dragging that thing back and forth at 2 miles per hour, fred. >> wow, that's incredible. thank you so much for that explanation, chad. so how much longer will they wait before pulling those sonobuoys out of the water and then deploying the bluefin sonar device? let me bring back our panel. mary schiavo, alan diehl and

david soucie. welcome back to all of you. as we just saw, there have been -- there's been the deploying of the sonobuoys to listen for the pings. the australian prime minister saying he's confident the four pings that they have already heard are from the plane's black boxes. so it has helped to narrow the search area immensely. but we haven't heard anything in days now, what, about five days since the last ping? so let's talk about what should we move on. should we give these sonobuoys a little more time, alan, or is it time to put these bluefins in? >> i think it's getting pretty close. i got a call from the guy that actually tests the sonobuoys, and his estimate was maybe -- they're guaranteed for 30 days. they test them for about 34 days at full power, and then he said they had about five days after that. so we're right on the cusp where we need to go from passive listening to active pinging with the bluefin. >> so, mary, how discouraged are you that it has been about five

days -- four days, depending on -- we're talking about the time difference -- since the last ping was heard? is that an indicator that the batteries are just simply dead? does it make you less confident that, indeed, the pings are coming from the black boxes? what? >> no, i think the batteries are probably dead. you know, there's been many pushes under way to get those batteries to be 90-day batteries or more. you know, frankly, the only thing that's required is a 30-day battery, and they got 34 days out of them, that's pretty good. they got just about what they paid for. so i'm actually very surprised that the batteries did last as long as they did, and that they were able to get pings. there have been many crashes where they haven't been able to find pings and they've had to go down and search, including the record-depth black box recovery, which was 16,000 feet in the indian ocean. they didn't get pings. they had to send the

submersibles down without them. they did find one of them. so we're a lot better off here at this juncture than many at the beginning thought that we would be. >> hmm, and so, david, are you encouraged by this that there have at least been these pings? you convinced, as well, that they are that of the black boxes? if so, at what point, at what stage do you think it's time to move on to a different apparatus like the bluefin? >> i'm convinced that they are from the pinging device. and the thing that bothering me a little bit now, is the pinger locator was on the beach basically for a week before they decided to take it on the ship and have it in the general vicinity. now we have these -- the bluefins out there, and they're ready to do their part. what we haven't seen yet is do we have the submersible recovery vehicles there that are ready to do this? what i see -- i haven't heard any word of the fact that they're out there. i talked to sources i know of that have told me they're not out there yet.

so that's what i'm curious about. once they get the bluefin out there, if they do identify something, will we wait another week for that to go out there and do it? again, i can see that there's no terrible urgency at this point for the actual recovery effort. however, these families are still waiting and just seeing things is not going to do it. they'll actually have to have a piece of the aircraft in hand and say this is what it was, and this is what happened. >> you're worried about the timeframe here, whether any of those other assets for the next phase had been moved into the vicinity, but you talk about the urgency, the lack of urgency there is to get them in place. yet at the same time, is it not still very strange to you that there is just no debris anywhere in the vicinity? >> yeah, it is strange to me. i've convinced myself that it must have gone down in at least a few large pieces, and that would explain a little bit about why there's no debris on the surface where they're looking now. the other explanation for that

might be that they're just -- the model they used for tracking the debris sin correct, and on flight 447 that's what happened. the model was incorrect. they spent several weeks looking for debris in the wrong area, so they didn't see anything there. in this case, yeah, it's strange to me that we haven't seen something. >> and, mary, if these pings are not that of the black boxes, what else would they be? >> well, there's lots of speculation and stories and, you know, basically, you know, citizen reports or fisher people reports that these pingers are used on fishing equipment, oceanographic equipment, you know, various mapping and other applications, and all sorts of equipment that goes into the ocean. however, i'm a little skeptical about that, because if anybody had put in an oceanographic or fishing equipment in the area where they're searching for pingers and, a, didn't come forward and fess up, and say i put some fingers on fishing nets or oceanographic equipment, so

sorry, can i get my stuff out while you look? and then, two, i think that certainly the australian officials and the chinese and everyone else out there looking would have noticed if there w e were, you know, if national geographic or a fishing fleet was out there in their way. so i'm a little skeptical of those reports. but it's possible it's on something else. >> all right, mary schiavo, alan diehl, david soucie, thank you. all of the high-tech equipment being used to search for the flight recorders may not show the search teams exactly where they are. tom foreman shows us how water can dramatically affect sound. >> reporter: hey, fredricka. we've talked about the devices that have been deployed to locate the source of these pings out there. the towed ping locator is one of the things we've looked at a lot. we've talked about sonobuoys being dropped out here. but everything that tries to listen in the ocean must deal with the unique acoustic

characteristics of deep water. and they present some real challenges. among them, something called the sound fixing and ranging layer. this is about a half mile down. it's a naturally occurring portion of the water where sound travels less quickly than it does below or above. a lot of different reasons. the salinity level, water temperature, and this is the result. sometimes because of this layer, a sound that may come up out of here can hit that slower area and be bent at a very substantial angle, so when it emerges, it's quite different from where you would expect it to be. in other cases, sound may come up out of here, and when it hits this layer, it can start ping-ponging between the top and bottom parts of it, and can actually go on, it's believed by researches, many miles before it resurges -- resurfaces. so in effect, that could explain why a pinger that should only be heard for about three miles, in the best of circumstances, may

be heard much further away, and that's why some of these pings might be so widespread as they are right now. fredricka? >> all right, thank you so much. tom foreman, appreciate that. it's been nearly four days since searchers heard that fourth ping, but officials say they remain optimistic. we'll have a live report from malaysia straight ahead. ♪

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no new audio signals have been heard since the four confirmed pings detected earlier this week. but australia's prime minister says he's confident the sounds are from the flight's black boxes. cnn's sunima udas joins us from kuala lumpur. first, what are malaysian authorities saying today? >> reporter: fredricka, the

malaysian authorities are saying those signals that the australian search teams have been detecting over the past few days, those are actually promising leads. they say particularly because the frequency of those signals are very similar to that of a black box. but still, they say all of this still needs to be verified and they're cautiously optimistic. have a listen. >> -- signals that needs to be verified. i totally agree with angus houston that any lead -- and this might be one of the more cautiously optimistic leads that we have, because the signals are similar to a black box. >> reporter: you can understand the hesitation there, because there's just been so many false leads in the past few weeks. so the malaysian authorities are saying they want to be absolutely sure before they can confirm anything. fredricka? >> and sumnina, what are the

families saying? >> reporter: well, the families right now are as skeptical as the authorities are, at least the ones we've been talking to. we just spoke to the mother of one of the -- of the iranian passengers who was traveling with a fake passport. and she said that she feels really let down by the investigation, as if malaysian authorities in particular have completely forgotten about the investigation. she says she hopes the americans are still on top of the investigation, because she feels so let down. and she says she really needs to see finally the evidence before she can believe that her son is actually no longer alive. and that is the overarching sentiment that we've been hearing all along, that these families need closure, and for that, they need to see some sort of evidence, some sort of debris. fredricka? >> i know it's painstaking. thank you so much, straight ahead, more on the

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side of the road food stall, and there are countless to

choose from in this town. but this one is legendary. i like it. to eat around this part of the world, get used to eating a lot of vegetarian. chick peas. india is one of the few places on earth where even for me that's not a burden. i'll take that. >> we know you miss ed it and te good news is you won't have to wait. the show is back. joining us now for a preview of what we're going to see this season of "parts unknown" anthony bourdain. anthony, fwad good to see you. your first stop, india. amazing spices and at the same time it's in a region that can be spicy, too, along the pakistan border. so what was this journey like? >> well, the food was indeed spectacular. the colors are extraordinary. it's a very, very beautiful part

of a beautiful country. and we looked at the, you know, in the course of just eating and looking into the far away past, the present kept intruding. it's a very contentious part of the world. the relations between -- along that border have really formed a the lot of the problems in the entire region. we, all of us, see it, feel it, hear it, live with with it every day to a great extent and we looked at that a little bit right where it matters. >> so there was a free community vegetarian restaurant there as well. describe that experience. >> well, it's the golden temple. it's the holiest spot in the sikh religion. at this temple every day for i think about a century, quite some time, many, many decades, volunteers have been cooking tens of thousands of free meals

for any and all of any faith and of any income level to come and eat and enjoy a simple meal. >> all right. just a taste. can't wait. don't miss the season premiere of anthony bourdain's "parts unknown." it's a big sunday double-header here on cnn. the premiere of "inside man" with morgan spurloc can k as well. it airs right afterwards at 10:00 eastern time. at the top of the hour new developments in the hunt for the missing malaysian airliner. why is australia's prime minister so confident that searchers are in the right area? we'll have a live report next. co: sometimes you don't know you need a hotel room until you're sure you do. bartender: thanks, captain obvious. co: which is why i put the hotels.com mobile app on my mobile phone.

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xarelto is not for patients with artificial heart valves. jim changed his routine. ask your doctor about xarelto. once-a-day xarelto means no regular blood monitoring -- no known dietary restrictions. for more information and savings options, call 1-888-xarelto or visit goxarelto.com. hello again. welcome back. i'm fredricka whitfield. strong words of can have tense from the australian prime minister. he says it seems pretty clear a black box has been detected. listen to what prime minister tony abbott said about four pings heard in the indian ocean over the past week. >> if the numerous, numerous transmissions recorded which gives us the high degree of confidence that this is the black box from the missing

flight. >> but those signals are fading fast and batteries power the pingers could be dead very soon if they haven't died already. here is where things stand right now. the pings that have given officials so much confidence were heard last saturday. and on tuesday. but nothing has been heard since. 14 ships and ten planes were involved in today's search. more than 1,000 miles off the coast of australia. crews right now are focussing on a search area about 16,000 square miles, about the size of massachusetts and connecticut combined. matthew chance joins me live now from perth, australia. so, math the you, what happens if they don't detect the pings again? >> well, they've not reached that point yet, first of all. if they do reach that point, when they decide they have no longer any chance of finding any of the electronic signals that could be emitted from the emergency beacons on the black boxes. they said that they will stop

the search operation under water with these ping locator devices and they will launch a sort of robotic, autonomous submarine, the bluefin-21 as it's called, which will will scan the ocean surface and continue the search in its own way to look for the black boxes. a much slower process, though, than using the ping locator. they want to get maximum -- use the maximum opportunity that they can if there are any further electronic signals with that ping locator. when that stops they will launch that submarine, as i say, and take it from there. the hope is still that despite the fact they haven't located anything, detected anything in the past four days, there's still a possibility of them picking something up in the days ahead. >> okay. and at what point do they abandon this effort to listen for a ping? >> well, there's not been an

exact time frame given and, of course, very much left up to the judgment of those involved. i expect we're getting pretty close to that stage right now, quite frankly. the shelf life of the batteries that power the pingers is said to be 30 days long. it's now 36 days since march 8, since the airliner was lost. and so it's not exactly clear how long they will last. perhaps they've already run out of juice. perhaps they will last a few more days or weeks. but it's been four days now since the last ping was heard. clearly those in charge of this search must be trying to assess now when will be the right time to move to the next stage. >> okay. matthew chance, thank you so much in perth. so if they are able to narrow the search field further, how does that affect the way the search will be conducted? let's bring back our panel now. mary schiavo and former

inspector general for the department of transportation, now an aviation attorney who represents families suing airlines in crashes and disasters. allean diehl is an air force investigator and are author of a book about air crash investigators right there. and david soucie is a cnn safety analyst and the author of "why planes crash." they have significantly narrowed the search area. but we haven't seen anything other than some ocean garbage. the signals haven't been emitted for four it's now. the question now, mary, at what point do they abandon the effort to listen for anything else before moving on, i guess, to the next type of search? and is that all going to be base ed on visualization, what they see some three miles down below over the 16,000-square-mile area? >> it is and i think they're

moving at this point to get all the logistics in place. they have to have support ships. they have to have people there to take care of them and their submersible submersibles and the folks working on those. they call for the u.s. supply ship, logistics ship, to come in and the u.s. has agreed to send that. that's like the floating gas station supermarket, if you will, to supply the folks there working. i think they're mobilizing to get if place to put that in the water. of course they want to be ready to go because once they put it in, it could be a couple days or it could be several months. and once they do they can't just stop and give up. i think they're already mobilizing to do it. >> and so, david, how do you explain that fifth ping now being ruled out? what happened exactly? >> well, the sonobuoys are really not designed for exactly what it received. they were modified slightly to be able to operate specifically

in the 37.5 kilohertz range. when it was received, they are designed to be launched out to find submarines. when there are several in an area immediately when there's a sound that might be a submarine sound or any sound that can be triangulated very quick ly so it's designed for an attack for a submarine attack. so a singular sound from a singular sonobuoys could have been a number of different sounds and it was ruled out quickly that it was not consistent with the black box pinger. >> does this underscore that false positives is a real problem and still potentially a problem if any one of these devices feels like it is to pick up some sort of audible noise from this point forward? >> i'm a little surprised that ping er didn't work better. i worked with the crews before with the ntsb. david's right. they're not optimized for finding pingers. the other thing, why no debris

on the surface? i can tell you, i worked a the water crash in '78 and that aircraft hit at 1,200 feet a minute. that's a very hard impact. and there was 0 no debris with that. the aircraft, they pulled it out and they said they were thinking about returning it to service. now we know in air france it hit at 11,000 feet a minute and it fragmented and the pingers apparently failed partly because of the violent impact of air france. the fact we're still hearing pingers tells me this may have been a more benign water landing than other people have speculated about. >> but then no fragmentation potentially, if that's the sken air yoe we're talking about here. then we talk about pings that are 17 miles apart. >> i was going to say i know we covered this ground before,

obviously under water these sounds don't travel in a straight line. they're bent by -- temperature layers. they're bent by reflecting off under water canyons. so we can have a lot of things that can distort where the sound is coming from and that's why this is such a difficult hunt. >> and then given all of this, mary, the australians, particularly the prime minister, still saying he has this level of confidence. is it your feelings the australians know something about any potential debris down below that they are just not articulating and that helps underscore this confidence? >> there are so many leads lined up. first there was just no leads at all and then they got satellite information and then they narrowed that down and thought, well, what if we don't get any

pings and then they got pings. from the hard leads they have, the facts are lining up and that has given them a fair measure of confidence and in terms of the two different pings, it's hard to say -- at first they thought it was from two different pingers and now they're not so sure. accidents where the cvr, the flight data recorder and the cockpit voice record er have ben found miles apart. so that's a possibility, too. i think in another case they were a mile apart. there's possible there's some distance between them, that they're picking up two different signals. but i think the australians are just reacting to the fact that sort of layer by layer they've been peeling the onion and it's panned out so far. gomez, the yankee player, said it's better to be lucky than good. let's hope for the australians they're both. >> david, is that your feeling, the facts are simply lining up?

>> yeah, i think so. i think that's a great deal of it. i go do think there's other information available. from the time it left the harbor it went 15 knots, pretty in much maximum speed, straight to where the pinger was. had hit that two hours of pinging. so they had credible information. it wasn't just the arc that they had. there was other information that said it was probably in that location. the united states is protective about any technology sharing with any other country, even those that are allies. if there was something in that area, i can certainly respect the reason that they wouldn't have said, yeah, we had something there had at the site of this. the evidence points there was information just simply because of the track and you could track that on marine tracking website and it will show you where that ship went. it went right to that spot the very first try which is millions of a chance.

>> marry schiano, allen diehl, david soucie, stick around. we want to bring you back later on as the story continues to develop. all right. so are the batteries on those black boxes dying? i'll ask an official of the company that actually made those pingers next. [ male announcer ] this is the cat that drank the milk... [ meows ] ...and let in the dog that woke the man who drove to the control room [ woman ] driverless mode engaged. find parking space. [ woman ] parking space found. [ male announcer ] ...that secured the data that directed the turbines

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the search for flight 370 is focused on trying to detect the pings heard over the past weekend in the indian ocean. crews heard at least four signals in the water. o officials say all four were within 17 miles of each other but they haven't heard anything since tuesday and that may mean the batteries attached to those pingers could be dead. i'm joined now by the vice president and group general manager of ateldine marine

systems. good to see you. so, thomas, all four signals are within 17 miles of each other. can officials use that to determine the exact spot where that box is located? >> no, they can can use that information to estimate the most likely general area, but sound moves very complexly in the water. it tends to bend, to bounce off things. so really if you wanted to put a box around it it will be much larger than that box they're looking at. >> the intensity of the sound doesn't necessarily mean you're closer to that pinger device. >> that's why they want to find more accuoustic events. the reason the sonobuoys were used, the reason they continue to tow the pinger array is to really increase the number of

hits in that general vicinity. that just tightens the box around the highest probability location. if you don't do that, then you have to open up the and tour and have a larger area search. when you put underwater vehicles into the water to start doing that they're slow and it becomes very complex and the search time goes up a lot. >> all this is predicated on the life of the battery. >> yeah, the battery life is kr critical and it's a complex problem. one of the things we've been talking about a lot over the last few weeks is the 30-day lifetime. that is the required lifetime by the federal aviation administration for the two manufacturers to meet, and we have to meet that at the end of the 30 days, at the end of life when the pingers put on the air frame. it can be on the air frame for six years. at the end of that if it goes in

the water we're supposed to last 30 days at a required output power, then we'll start to drop o off, the pinger starts to declay in amplitude, maybe in frequency which is what they think is happening here. the ultimate lifetime depends so much on the battery storage, the exact design of the pinger, things like that. >> and as we understand it, the sounds, those pings, were detected after that 30-day period. so we're talking about a real stroke of luck here that perhaps the batteries may have lasted a little bit longer than the 30 days even though the past four days now nothing has been heard. >> it would have been very unlikely the batteries would have been dead the day after 30. it's what happens at 36, 37, 38. that begins to get a little bit out of the comfort zone of where we want to be. >> okay. and we have a flight data recorder on the desk here, and we have the sicylindrical porti that we're talking about.

it has a beacon on it. as soon as it hits water that's when it starts emitting that sound. the australian prime minister has expressed optimism, a sense of confidence. are you feeling that way as well? >> well, i think there's probably more init tell generals on what's going on than maybe -- >> you do? >> yeah. i think in the last segment your guests were talking with about the fact that the "ocean shield" went right to the spot where they were looking at the pinger and quickly acquired a target. you know, again, that's a needle in a haystack problem. that's a pretty good jump right on the needle. i think there's more intel. >> thomas, thank you. more on the search for flight 370. next, new details in that bus crash that killed high school students and chaperones. what witnesses say they saw before the terrifying collision. the ♪

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we'll get back to malaysia flight 370. first there are other flights we're following. here is nick valencia. plenty of news to catch you up on. let's start in california where there are new developments today in that deadly bus crash just outside of sacramento. kobr spoke with witnesses who

said a fedex truck was on fire before it rammed into the bus on thursday. the bus was carrying prospective students to humboldt university to visit the campus. ten people were killed, five of them high school students and more than 30 were injured. kxtv has an emotional reunion between a is your vying student and his parents. >> reporter: prayers were answered for the hoyt family as they arrived from san diego at glenn medical center. >> good to see you. >> reporter: on his way to freshman orientation at humboldt state university harley hoyt expected to see the first glimpse of his future but, instead -- >> chaos is what i saw. >> reporter: sitting in the back of the bus, harley didn't see the fedex truck coming, but he heard the screams of the others up front. >> once we hit the impact, the front of the bus was on fire. smoke started coming through the whole bus. >> reporter: harley was able to break open an emergency window exit just in time. >> i looked out the window and the fedex bus was already on

fire. we're going to blow up. >> reporter: getting out of the bus was just the beginning oocht we all crossed interstate 5. and after that everyone just like was laying on the grass, people were out of it, people were crying, people were pulling their hair, people were screaming. >> reporter: harley suffered only minor injuries, something his parents had to see to believe. >> he did he haefinitely had an with hill. >> a special gift given to us. >> reporter: lucky is an understatement. blessed is an understatement. i don't know how to describe how i feel. i am so thankful i am here, gre grateful that i'm alive. >> a who are i can scene there. our thoughts to those affected by that. our thanks to gabriel rojas. the president and first lady released their tax returns and adjusted gross income of $481,000 for 2013, about 21% less than last year. most of the income is from the president's salary, of course, the obamas reported about $100,000 in book sales. their federal tax bill was

$98,000. a hefty price there. a special stop for the duchess of cambridge during her royal tour of new zealand. advi visiting a chirp's hospice catherine had a tea party with a 6-year-old girl whose mother has te terminal cancer. she joined husband prince william at the cambridge town hall, delivered flowers to a war memorial. you see the photos there. baby george is not with the royal couple on this leg of their tour. beautiful moment there with that tea party, though. i can't get enough of that. >> i know. that is so sweet. and i'm sure if baby george was there, he would upstage everybody. >> he would be the star. >> maybe a good idea not to bring him to the tea party. thanks so much, nick. straight ahead what will it take to recover the black boxes from flight 370? our live coverage continues right after this. it starts with little things. tiny changes in the brain. little things, anyone can do. it steals your memories. your independence. insures support. a breakthrough.

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into another day. >> they have numerous transmissions from the black box or from what we are confident is the black box. >> but even with that optimism, time is running 0 out to retrieve the black boxes before the signals fade, and the loved ones of those onboard want answer answers. >> the real challenge in looking at this is that the fox is very much in charge of the hen house. it makes us question every step that's taken. >> we'll have the latest information as it becomes available as our live coverage of the mystery of flight 370 continues right now. today crews desperately tried 0 to detect more pings that officials believe are coming from the plane's black boxes. search teams are focusing on an area about 16,000 square miles, about the size of massachusetts and connecticut combined. 14 ships and 10 planes were involved, and they're working more than 1,000 miles off the coast of australia. the australian prime minister

said even with the confidence the search is likely to continue for a while. as we've said, officials are racing to find those black boxes before the krcritical signals fl silent. that's not the only challenge for search teams. they also have to retrieve the devices from ocean waters nearly three miles deep. george howell has more on how they manage to do that. >> reporter: once you found a needle in a haystack, how do you extract it? that's what investigators are up against in the search for flight 370 as they tray to hone in on the black bobbings. >> search operators found the needle before the haystack. it's quite unprecedented. >> reporter: once you know where to look, how do you get down there some 14,000 feet below the indian ocean. >> there's one of two ways we do it. you either to it with a remote vehicle that is not tethered to

a ship on the top or you do it with a tethered remote vehicle. >> reporter: the former managing direct aror of the national transportation safety board says similar types of vehicles with almost 13,000 feet deep during the search for the cockpit voice and data recorders from the 2009 air france crash off the coast of brazil. they were found about two years after the crash. they recovered artifacts from "the titanic." before sending the vehicles down, investigators must first map the terrain. a step that takes time and requires patience. >> if it is in rocky or cavernous terrain, it could be challenging. but once the wreckage is identified, these vehicles and the operators have extraordinary capabilities. >> reporter: locating them is one thing, but pulling the black boxes from the incredible depths

is another. the remote controlled vehicles armed with sonar, cameras, lighting, and remote control arms may sift through silt and potentially through wreckage in pitch dark waters. >> it can be painstaking. it can be very difficult. sometimes the boxes have separated from the wreckage. sometimes the boxes have separated from their pingers. so this is going to be a long process. >> reporter: george howell, cnn, chicago. all right. a very long process indeed. let's bring in our panel again. mary ski after owe, allen diehl, and david soucie. welcome back to all of you. we've seen in that piece it could take a very long time. once they even locate the black boxes then you have to retrieve it and we're talking about potentially three miles deep. so, allen, this compares to what in you your view? we know from the air france

incident there was no retrieval of those black boxes. it took a very long tame ime to retrieve the debris. how would you compare the two potential searches? >> well, in the air france case it did take them 23 months. the pingers failed. the black boxes were recovered, fredricka, but another accident was mentioned earlier by mary was a south african 747 in the western indian ocean. that was the deepest recovery after black box. they only got the cockpit voice recorder. so this is going to be a real challenge depending on whether or not the aircraft is intact and, ironically, if the aircraft is intact, it may make the recovery of the black boxes more complicated. >> more complicated? why? >> because they're going to have to somehow get into the fuselage of the tail area of the wreckage and try to extract the black boxes. i think they'll try to get the black boxes first before they make any decisions about

attempting to raise the wreckage. >> this is a big old potential. if indeed it were all intact, this plane were intact, they were to locate it, et cetera, alan, what kind of apparatus would be used to try to pull it up from the ocean floor? would it have to be taken apart and then rae assembled once on la land? i mean, what device is big enough to lift an entire 777 if, indeed, it were intact under water? >> well, fredricka, there are devices. you remember the russian submarine that weaponed hundreds of times more than the 777. so there are devices that can cable, if you will, this thing to the surface. they may decide after listening to the black boxes they don't need to recover everything. there's going to, of course, be a big push to bring up the fuselage because of the human remains. obviously we know there's pressure to do that. there is equipment and this is not my field, but i certainly have read about recoveries of

much larger devices and aircraft, submarines, et cetera. >> the most important is the black boxes. if, inteed, it were the fuselage, all that alan just explained, the most important to retrieve the black boxes and this really could just be a watery grave, the rest is left. >> well, yes. alan is right. they will get the black boxes first but in tw 800 they use that had equipment of the u.s. navy's ships for raising scuttled submarines the grasp and they have cables to lift heavy stuff out of the ocean. if they had to bring up the whole plane, they could. they'll want the boxeses first to see if it's necessary or even desirable to bring up the whole plane. >> david, is it time to start sending some of these assets to the area that would be part of the retrieve on a mass scale like this? >> well, it takes a long time 0 to get the crews prepared and to

get all the equipment into one place. you know, i'm not in perth so i can't speak to it directly but i have not heard any reports from any of the cnn reporters we have there that any of this type of equipment has been brought to the scene. so it takes months, literally months to get that stuff ready to go. at the very soonest it would be two or three weeks. so i'm surprised they haven't started getting some equipment there that would help with that, at least the retrieval of the box, as was said before about how you retrieve the whole aircra aircraft. that's a whole different set of equipment and i don't think they would be prepared to do that, of course. at least something there that can get the black box would be sensible. >> would it be your feeling that if it were intact it wouldn't be necessary to bring the whole fuselage up, the whole plane up if you have the black boxes and the black boxes tell the story? do you need the rest of the plane to fill in the blanks of the story? >> you know, it depends on everything that you find. the purpose of an investigation is not only to find out what happened but why it happened.

so you keep investigating and obtaining clues and evidence to the point which you can answer that reasonably for the families and to prevent it from happening again. so if the clues that are -- that we need to find out why are found within the flight data recorder and the cockpit voice recorder after retrieval, there re really is no reason to. and then it's up to the matter of the families who will have a definite something to say about whether the bodies of the remains of the people would be left where they are in place or retrieved. so there's a lot of complications that go from that point forward but, again, back to just answering the question why, the only reason you would have to get the whole aircraft up is the clues we needed were not found in the evidence. >> all right. david soucie, mary schiavo, alan diehl, thank you. appreciate it. we're going to continue to tig deep into angle of this search for the missing plane today. but next the dramatic moment made when the blade runner,

pistori oscar pistorius, dot on the stand in his own defense. he says he's not a murderer. why the prosecutor says his story just doesn't add up next. kills bugs inside and prevents new ones for up to a year. ortho home defense max. get order. get ortho®. [ female announcer ] f provokes lust. ♪ it elicits pride... incites envy... ♪ ...and unleashes wrath. ♪ temptation comes in many heart-pounding forms.

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i and i cried. and i don't know how long. i don't know how long i was there for. she wasn't breathing. >> we'll take an adjournment. court will adjourn. >> it was indeed an emotional, dramatic week as olympic star

oscar pistorius took the stand in his murder trial. he broke down sobbing as he recalled the moment he realized it was his girlfriend, reeva steenkamp, who he shot in his home last year. pistorius says he thought he was shooting at an intruder who was hiding in the bathroom and he didn't know it was his girlfriend instead behind the door. but the prosecution says pistorius shot steenkamp after a heated argument and the courtroom got the tense as prosecutor gerrie nel grilled him. >> you said you were vulnerable, you felt vulnerable, am i right? >> that's correct, my lady. >> but you approached -- that doesn't make sense. in fact you knew that reeva was behind the door and you shot at her. that is the only thing that makes sense. you shot at her knowing that she was behind that door. >> that's not true, my lady. >> all right. i am joined now by our brilliant

legal guys. good to see you, gentlemen. it's been way too long since last we were all together. so here we are. >> good to see you. >> what a riveting case, this oscar pistorius case is filled with lots of emotion, still lots of questions. so, you know, after four it's on the stand do you think oscar pistorius' it testimony is working for him or against him? >> i have to tell you, fr fredricka, i always believed the story here. with but this cross-examination by gerrie nel, the prosecutor, has been, and you used the word, riveting. this has been extraordinary. the idea of pistorioscar pistor being at the door in front of the bathroom ten feet away shouting and he said, well, wouldn't she have responded? normally people would say, no, no, it's me. i'm in here.

>> he did testify and said that he was yelling out her name and asking her, are you okay? and get down but then there was no response before he started unloading his weapon. >> it just made no sense and i thought nel did a tremendous job. he also really was successful in chipping away at pistorius' credibility. there was an incident in a restaurant where he shot a glock and he said, well, the gun just went off. pistorius said the gun just went off. fredricka, that's impossible. if you've ever fired a glock, there's a trigger within a trigger. it doesn't just go off. these past two days have crescendoed leading up to what we'll see on monday which will probably be the last day of the cross-examination. >> okay. and, richard, the prosecution said mipistorius was a temperamental gun loving hot head. did the prosecution do a good job of establishing that? >> that's pretty well been established throughout the course of the trial. it's fascinating to watch the

difference between our criminal justice system and our procedures and theirs because this prosecutor is basically doing a summation as he's cross-examining pistorius, and he's commenting on him and he's calling him a liar and it's all over the place. it's just fascinating to me and it's just inconceivable that pistorius would even take the stand because in a case like this probably in the u.s. no defendant would get up there and testify. it's amazing. and credibility and reliability are strong issues and that's what they're trying to attack, tripping up his version of events. and if he said to her, reeva, i think someone is in the bathroom, go down and call the police. he supposedly whispered that to her, then he went to the bathroom door, started shooting, and it took four shots, fred, it was the last shot that hit her in the head. there's testimony that there was screaming -- a woman screaming before that fourth shot. this guy is in trouble here, i would think. one other quick thing.

a dichotomy hear, 52 million people in south africa and of the 52 million about 5 million are white and of the 5 million about 250,000 are ones who have been repressing blacks and women for many, many years. this judge, this female judge, is now going to make a decision on -- >> that is an incredible irony, i must say. that is remarkable irony. >> pistorius and his lawyer, very interesting. that's all i'm bringing up to show that. >> it is interesting. you know what, gentlemen, let's listen to just one more clip of the cross-examination of pistius where apparently he's getting confused about the sequence of events. listen. >> my lady, i'm getting confused with this accidentally. when i try to explain myself i'm told to say whether it's an accident or not. i've said time and time again what i perceived and what i

thought. i don't understand. if it was put to me yesterday that it was by accident and it wasn't by accident, i don't understand, my lady. i'm saying that i didn't intend to shoot. i was pointed at the door because that's where i believed somebody was. i heard a noise and i didn't have time to think. it was an accident. >> all right. so, avery, he says he's confused but is he also confusing the court? >> well, actually the judge and, again, you have a black judge, two black assessors making the decision, i don't buy, by the way, the idea what the split in the country is. i think this is a renowned judge who will do the fair thing. the judge said to him, if you're tired, if you're confused, you need to tell me that. you notice in the clip he references my lady. he's talking to the judge. >> while the prosecutor is asking him the question but, yeah, he's referring to the judge.

>> but that's smart. that's a good thing, fred. in cases like this, it's a rule of thumb, if the government witnesses make mistakes, jurors usually forgive them. but if a defendant gets up on the stand and you can trip up a defendant and catch them in a lie, usually the jurors are not sympathetic at all and they lose all credibility. here that's what the prosecution is trying to do for this judge, trip him up, show that he's not credible. this was not an accident. he knew full well she was in there. >> on material and nonmaterial things. >> consistent the government's version they were in a fight, that she locked herself in there for fear of him and he went after her. >> that's the story, right. >> it's a fascinating case. still more to come on that. avery, richard, always good to see you. sorry we're not seeing you more but we will see you again soon. thanks so much. you can catch the legal guys every saturday at about this time to give us the most intriguing cases, their take on

the most intraiguing cases, tha is. how much longer will it take to get the black boxes from the missing malaysian jet? also, they've taken to the links in georgia. it is masters time. but tyiiger and phil are nowher to be found. it's all about bubba these days. dear sun,

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all right. big weekend on the links. tomorrow a new masters champion will be ground. with bubba watson, in fact, today is on top of the leader board at the masters. cnn's ravchel nichols is live a the legendary augusta national in georgia. rachel, no tiger, no phil, but we have bubba. >> reporter: absolutely. and bubba very popular here, of course. went to the university of georgia and he won this tournament two years ago. what's interesting is when he came off the course yesterday, he was talking about how he couldn't focus on his golf game. he said this time, this year, he feels so much more free and he's playing like it. he let off a string of five birdies yesterday and as he said overall, hey, leading again not bad for a guy nicknamed with bubba whose mom had to work two jobs just to let him play golf.

he said he's pretty happy. >> people were happy for him and hopefully we'll see a little bubba-licious stuff from him. why no tiger and phil? are we talking injuries again? >> reporter: well, phil mickelson came this week and he said he felt healthy as he went through the first two rounds but did not make the cut. he wasn't sharp enough. he was funny afterward. as punishment to himself he was going to force himself to watch the rest of the tournament on television so he could see what he was missing. tiger on the other hand is an injury issue. he withdrew because of a back injury and it's one of the late nest a string of injuries that's been plaguing him the last few years of the he's still ranked number one. will probably lose that number one ranking by the time he gets back. the question remains, is tiger woods going to ever be the tiger woods who won 14 majors? are we going to see that tiger again? it's been six years since he won

a major. it's not going to happen again this week. >> hard to believe it's been that long. perhaps he already reached his peak but, hey, you never know. rachel -- and you never know what could happen at augusta. i mean, we're talking bubba today, but everything could turn around tomorrow. so we'll be checking in with you periodically. thanks so much, ravchel. of course you'll want to join rachel for all access at you a fwus at that, a bleacher report special coming up. and at the top of the hour, new developments in the hunt for the missing malaysia airliner. why is australia's prime minister so confident that searchers are in the rate aight? and don't forget to watch "inside man" morgan spurlock. he becomes a paparazzi right here on cnn.

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i'm dr. sanjay gupta on the ground here. join me live. as you'r

hello again, everyone. welcome back. i'm fredricka whitfield in the cnn newsroom. today the australian prime minister said he is confident search crews detected one of flight 370's plaque boxes and it all goes back to the four

critical pings that have been picked up over the past week. >> there have been numerous, numerous transmissions recorded which gives us the high degree of confidence that this is the black box from the missing flight. >> but those signals in the indian ocean are fading fast. the batteries powering the pingers could be dead very soon if they haven't died already. here's where things stand right now. the pings were first heard last saturday and then again on tuesday. but nothing has been heard since. today 14 ships and 10 planes were involved this in the search. more than 1,000 miles off the coast of australia. crews right now are focusing on a 16,000-square-mile area about the size of massachusetts and connecticut combined. after five weeks of waiting and fwrefg, families of the passengers aboard flight 370 are skeptical now about the search results so far. in malaysia officials are

echoing some of those concerns. cnn's sumnima udas joins me live now from kuala lumpur. sumnima, how are malaysian authorities reacting to the new leads in the investigation coming out of the indian ocean? >> reporter: well, malaysian authorities are calling those signals that the australian search teams have been detecting over the past few days a promising lead particularly because the frequency of those signals are very similar to the black box. still, they say, all of this needs to be ver faified and the remain cautiously optimistic. have a list en. >> signals use d to be very wye et. i agree with houston that any lead, and this may be one of the more cautiously optimistic leads that we have because the signals

are similar to a black box. >> reporter: there have been so many leads in the past few weeks, false leads primarily, so the malaysians want to be absolutely sure before they conclude anything, fredricka. >> and then what about from family members? what sentiments are they expressing? >> reporter: well, the family members, are for the most part, at least the ones we've been talking to, are also very skeptical. they say, and this has been the over arching sentiment all along, they say until they find some sort of evidence, until they see that debris, they will not believe anything. we've been talking to a mother and father of -- they lost their only child in that plane, and they say -- or the mother says she still continues to call him almost every single day. she genuinely believes that he is still alive.

we are also talking to the mother of the iranian passenger who was traveling on that fake passport, and she says she, too, needs to see some sort of evidence. until that happens, they cannot believe that their loved one is no longer alive. it is very opinion for them to see that for them to get that sort of closure, fredricka. >> that seems so very tormenting. thank you so much, sumnima udas. so if malaysian authorities are skeptical about the progress of the investigation, where does that leave us? let's go to our panel for this hour, mary schiavo, a former inspector general for the u.s. department of transportation. she is now an attorney, an i have a ation attorney who represents families suing airlines and crashes and disasters. and alan diehl is a former ntsb, faa and air force investigator and the author of a book about air crash investigators. air safety investigators. you see right there. the malaysians seem to be back tracking on their own investigation. it was just ten days ago when

they declared that they had given an all clear to the passengers onboard, and now they seem to be saying that no one has been cleared. what does this tell but the investigation, that it is it is back to square one, it's in disarray or does it seem par for the course? >> well, fredricka, i hope you can still hear me. can you. >> yes. >> okay. i think it's back to square one. as mary and others have said, the malaysians have mishandled this almost from the beginning, and a number of things they've done have been very dysfunctional or seemingly dysfunctional unless there's a method to their madness we're not privy to. clearly the two great things have been the use of the inmarsat data to locate the aircraft and them delegating to the australians to do the investigation. but i still don't know what to make of what the malaysians seem to be trying to do.

>> mary, is it as simple as uncha uncharted territory? no one has been in this situation before. 777 taking a strange course and then simply disappearing with 239 people onboard. and is it just as simple as the case of malaysia investigators have never had to deal with anything of this magnitude before and so they're just kind of feeling their way through it as we go along? >> well, that's part of it, but they're also not used to the lenses of the world trained upon them as they attempt to do an investigation. as we know in the united states, any of us who have been prosecutors, you have to walk a fine line between what you release and what you have to keep confidential in a criminal investigation but this is, you know, most of the western nations of the world are used to poking and prodding their government and questioning, saying what do you mean you didn't pick them up on radar or you had a 40-minute delay between the plane went missing and you tracked them? how is it you didn't see which

way they went? that's just the kind of thing that we do. that's how we treat our government, and i think their government isn't used to being questioned. when somebody says, what do you mean you cleared 237 people in less than a week? that makes no sense. then they back track and put something else out. and i just don't think they were prepared for western style investigations which are very poking and prodding. >> and, in fact, the minister of transportation then said maybe it's something in the lost in translation, maybe because culturally we do things a little bit different, that perhaps it's been misconstrued or misunderstood. >> no, i don't think so. i mean, what's unfortunate is a few things that they have done clearly hurt the investigation. the disarray over the radar slowed things down, but it at this point the best thing they can do is just let the joint task force do its work. it at this point everything is a game changer. once they get the black boxes,

really there's no evidence that can't be gone back and gotten once they get the black boxes and find out what happened. we'll have a very different squu discussion if they don't get the black boxes because we'll really be at square one. there's time to make up for the lost ground in this investigation. >> alan, do you feel like malaysia's skepticism or maybe disarray undermines australia's confidence? >> well, the australians are actually working for the malaysians so if they did, they're not going to admit it. they're going to be very diplomatic. there's another issue here that i don't know if mary has touched on but this is really the government investigating a government-owned airline -- >> right. because we're talking about the malaysian airline being owned by the government and now it has to investigate itself, and perhaps it doesn't necessarily want to reveal that potentially they could have a big security problem or he potentially they have an airline inspection

problem. >> exactly right, fredricka. we stopped that sort of thing in 1974. congress was concerned. they didn't even want the ntsb investigating the department of transportation. at that time they were a part of it and congress said, no, in nt the has to be totally independent and we're seeing just the opposite here in kuala lumpur. these are a bunch of people that have a vested interest in making malaysia look good and making the airline look good. so this is not what we'd like to see. i think the u.n. will have to address this whole issue of annex 13 and what we do in a w future case. after all, many countries can afford to buy a 777 or 787 but not capable of running a detailed coordinated investigation. so we're going to have to really think this at the international level, fredricka. >> maybe a little too

incestuous, too close for comfort. thank you, alan deal, mary schiavo. appreciate that. stick with us. we'll bring you back later on in the hour to talk more. all right, also next how soon will searchers go under water? and when will they deploy a sonar device to scan the ocean floor? ameriprise asked people a simple question: in retirement, will you outlive your money? uhhh. no, that can't happen. that's the thing, you don't know how long it has to last. everyone has retirement questions. so ameriprise created the exclusive.. confident retirement approach. now you and your ameripise advisor can get the real answers you need. well, knowing gives you confidence. start building your confident retirement today.

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searchers are racing to find more clues in the hunt for missing malaysian airliner. pings in the southern indian ocean over the past week. no confirmation they are from flight 370. time is running out to get as much information before the pings stop altogether. i want to bring in sonar expert arnold carr and find out what happens next. president of american underwater search and survey. mr. carr, was the batteries run out, they will lower a sonar

device into the water. how would that help find the plane? >> well, the device they would be using is like something they have on site, an autonomous underwater vehicle unmanned. the and it will be programmed to go town and look at priority areas where they think the pingers originated as far as the signal. they will go down with this vehicle that can operate at that depth for maybe up to two-thirds of a day or more and it will do a very systemic search trying to locate debris. and once they locate debris which means they have to actually bring the vehicle back and then start looking at the information, it's not real time information. and then see if they can

identify parts of a debris field like a tail or a wing or a cockp cockpit. >> so you're not able to read this information simultaneously. it has to be brought back. so for how long would there be this sweeping of the ocean floor, this search for information before researchers can actually look at the information, the data that is collected? >> well, once it is deployed, you'll have that material back, the at that at that back within the same day. and then it'll take several hours minimally to review that data. and then probably send the aud down again with the side scan sonar or if they do have a debris field with a camera system in there instead of the sonar to try to get a good visual resolution. >> and what's the range of view? i men, if you are dealing with

visibility in the ocean because of currents, et cetera, being only ten feet or 15 feet or 50 feet, is that going to be the view of this device as well? or can it kind of see through murky water? >> that's quite likely because you're really availing yourself. you need the lights to get your visual return. so it's going to be a slow process. that's why you use side scan to look more at possibly a kilometer sweep all at once and then you really zero down into areas of great interest. >> oh, my gosh, it sounds like a herculean task, just listening to this description almost feels like this is improbable. is it? >> it's going to require a lot of patience and tenacity. it's not impossible. i think they will be found, the recorders and the debris field but it's going to take patience.

a 100-square-mile area being searched with sonar like it would have could take five months or more. >> oh, my gosh, it could take five months or more and we understand we have 16,000 square mile area. that's extraordinary. okay. arnold carr, thank you so much. appreciate that. straight ahead more on the search for flight 370. next, survivors of a horrific bus crash and their incredible stories. gunderman group is a go. yes! not just a start up. an upstart. gotta get going. gotta be good. good? good. growth is the goal. how do we do that? i talked to ups. they'll help us out. new technology. smart advice. we focus on the business and they take care of the logistics. ups? good going. we get good. that's great. great. great. great. great. great. great. great. great. (all) great!

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we'll get back to more on malaysia flight 370 in a moment. first other news to get to. nick valencia on that. plenty of news to catch you up on. an mcnational defense meeting after 20 gunmen in camouflage took control of a police building in eastern ukraine. they report edly arrived in a minibus and opened fire at the building before entering through windows. three police officers were slightly injured. the policemen inside were allowed to leave. the u.s. state department described the situation as worrisome. there are new developments in the deadly bus crash in northern california. kobr spoke with witnesses who said a fedex truck was on fire before it rammed into the bus on

thursday. the bus was carrying prospective students to humboldt university to visit the campus. ten people were killed, five of them high school students and more than 30 were injured. kxtv has an emotional reunion between a surviving student and his parents. >> reporter: prayers were answered for the hoyt family as they arrived from san diego at glenn medical center. >> good to see you. >> reporter: on his way to freshman orientation at humboldt state university harley hoyt expected to see the first glimpse of his future but, instead -- >> chaos is what i saw. >> reporter: sitting in the back of the bus, harley didn't see the fedex truck coming, but he heard the screams of the others up front. >> once we hit the impact, the front of the bus was on fire. smoke started coming through the whole bus. >> reporter: harley was able to break open an emergency window exit just in time. >> i looked out the window and the fedex bus was already on fire. i was like, okay

we're going to blow up. >> reporter: getting out of the bus was just the beginning. >> we all crossed interstate 5. and after that everyone just like was laying on the grass, people were out of it, people were crying, people were pulling their hair, people were screaming. >> reporter: harley suffered only minor injuries, something his parents had to see to believe. >> he definitely had an angel with him. >> a special gift given to us. >> reporter: lucky is an understatement. blessed is an understatement. i don't have a word to describe how i feel. i am so thankful i am here, grateful that i'm alive. >> incredible. our thoughts to those affected by that. our thanks to gabriel rojas. a violent between federal agents and a cattle rancher. wednesday agents were there rounding up cattle that had been illegally grazing on government land for about 20 years. the bureau of land management says one of his drivers was struck by a supporter of the

rancher and path blocked by militia members. a police dog was kicked and other officers threatened and assaulted. the feds took off but not before a family member says they were tasered. our dan simon is there looking at that story. we'll be sure to keep an eye on that. >> some tense moments there. hey, another story, nick, on a much lighter note, one that's supposed to make everybody laugh and everyone is talking about it this week, david letterman's retirement. that's not the funny part. the funny part is who may be replacing him. stephen colbert. host of "reliable sources" tells us what's next for cbs in late night tv. >> hey, fred. it's been quite a few days for fans of late night tv because we are seeing all of these changes happen in a row. first david letterman announces he's retiring and then later stephen colbert says he's going to be the one taking over. he joked about it in character

on his colbert report on thursday night and said those are very big shoes to fill. of course he didn't step out of character and acknowledge he will be the one filling them. we will see how colbert starts to transition in the next few months or the next year or so into his own self and not the conservative blow hard character he pretends to be on "comedy sev central." now other jobs to fill as a result. comedy central has to figure out what they'll do at 11:30. "the daily show with jon stewart" will still be there but they have that timeslot to fill. and so there's going to be a race by any number of comedians to raise their hand for comedy central. and i do wonder what cbs will do at 12:30. right now craig ferguson follows david letterman. it seems like he's been visibly snubbed by cbs since they've gone out and hired stephen colbert instead. the head of cbs, les moonves says 12:30 is up in the air, which suggests ferguson could be

leaving in the future and potentially will be another timeslot for cbs to fill. now that it's figured out one you transition from letterman to colbert, they may have another one on their hands. fred, back to you. >> lots of work to do. brian, i appreciate that. in a moment we'll return to our look at the missing malaysian airline flight 370 a month after the plane went missing. now malaysia airlines intensifies its security measures. not all members are happy about that. gunderman group. gunderman group is growing. getting in a groove. growth is gratifying. goal is to grow. gotta get greater growth. growth? growth. i just talked to ups. they've got a lot of great ideas. like smart pick ups. they'll only show up when you print a label

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in the air and beneath the ocean depth, the search for missing flight 370 pushes into another day. >> there have been newspaper russ transmissions from the black box or from what we are confident is the black box. >> but even with that optimism, time is running out to retrieve the black boxes before the signals fade. and the loved ones of those onboard want answers. the real challenge in looking at this is the fox is very much in charge of the the hen house. it makes us question every step that's taken. >> we'll have the latest information as it becomes available as our live coverage of the mystery of flight 370 continues right now. and it is now day 37 in the search for that missing plane and crews have been desperately trying to detect more pings.

officials believe are coming from the plane's back box. search teams are focusing on an area about 16,000 square miles. that's about the size of massachusetts and connecticut combined. 14 ships and 10 planes were involved and they're working more than 1,000 miles off the coast of australia. and the australian prime minister said even with the confidence this search is likely to continue for a while. since flight 370 vanished much attention has been focused on the plane's crew and security measures or lack thereof on that aircraft. that's prompted malaysia air lines now to make some changes. as nic robertson reports, not everyone is happy with those adjustments. >> reporter: weeks after flight mh-370 disappeared, malaysian airlines tightened onboard security. among other things sources tell cnn a senior cabin steward is deployed to the cockpit whenever one of the pilots leaves, a safety proceed you, they say, to

make sure no one is left in the cockpit alone. but a union representative says such moves put crew members in danger. >> they're not highly trained people with security backgrounds. so this is quite demeaning to th them. and putting them also at risk will not be the right thing to do. >> reporter: union president, a 25-year crew chief representing several of 370's missing crew. he was friends with some of them including crew chief andrew nari who is still under investigation. can you imagine this man, your friend, ever doing this? >> no, i don't think so. not in my wildest mind. i don't believe so. >> reporter: while helping the crew's families as they await word of the missing airliner, his bigger challenge, he says, is protecting the crews still

flyi flying. over the past three years malaysian airlines has lost more than a billion dollars as it faces increased competition from low-cost carriers. that has led to a lowering of crew morale that has further deepened since the disappearance of flight 370. the new changes are adding to the crew's anxieties. >> the problem is when these changes have been made they were not consulted and they are not -- >> reporter: compromise does not appear close. malaysian airlines said this is an operational initiative which is an enhancement to security measures taken by all airlines including mas. >> do you intend to resign? >> reporter: airline boss appears in battle at news conferences often asked if he'll quit. until now his answer, i'll take it one day at a time. nic robertson, cnn, kuala

lumpur, malaysia. so has this mystery exposed deep flaws in our air security system? let's bring back our panel, mary schiavo, alan diehl and david carr. mary, he especially in light ofl that's taking place and not taking place, really begs the question. are we safe to travel he is pesy overseas right now? >> well, you're only as safe as your national regulations allow you to be. each flying nation, i call them aviation nations, have to fly by the rules of their own country. and the malaysian tragedy has pointed out that malaysia department have rules comparable, for example, to ours in many security areas. for example, the solid and secured locking doors and that a crew member, if they leave the cockpit, must be replaced by another person, a flight attendant. that's already the rule in this

country for most airlines. we don't leave a pilot in the cockpit alone for some very practical reasons. what if the pilot's taken ill, if there's a decompression, et cetera, and who will let the other pilot back in? there's lots of reasons for that. this is pointed out malaysian airlines did not follow the rules that most of the aviation nations take for granted at this point in a post-9/11 world. >> isn't it always the case there are going to be disparities depending on what country you're in, what that b country's history is? could there be a universal security plan in place that everyone has to adhere to? >> yes, there is, because, again, the over arching umbrella that lets all of the nations with aviation sort of fly around the world without running into too much trouble is the international civil aviation organization which is an offshoot of the u.n. and our united states complies with those as do other aviation natio nations. now if your regulations do not comply or meet the standards then you have two things that

can happen. other nations shall refuse, can refuse to recognize your rights to fly to them and the european union could put you on the do not fly list. all of indonesia are on the no-fly list. >> before we can pinpoint what happened with this missing flight, is it any difficulty to impose new security measures without knowing where the holes were, what happened, did it have anything to do with the passengers? did it have anything to do with checking of correct passport information? did it have something to do with the flight crew? >> who is that for, fredricka? >> oh, i thought that was for arnold. >> oh. that's really out of my field. that's a difficult one. i could give you some speculation, but i'd rather not. >> okay. all right. why don't we go to you, alan. are you ready to dive into that one? >> i'll try it.

i worked with iko like anyone who has been in the business for 40 years and one of the things i don't know if mary meant to say it but the member nations with opt out of any iko rule if they want. i believe that's still the case. the other thing that bothered me that came up in this investigation is that malaysia does not have sky marshals and apparently don't have the armed crew member safeguard that we have in the states. pilots after going thank you training in the u.s. can actually carry firearms into the cockpit. if a potential hijacker knows that, they may think twice before trying to rush in there. >> and so, mary, is it your feeling, though, do you have to get to the bottom of what happened to this plane? did it have anything to do 0 with passengers? did it have anything to do with crew before you can impose any new regulations or is it smart that malaysian authorities say for now we are going to stiffen some security measures that pertain to our crew?

>> absolutely you should not wait. and that's one thing i do give them credit for. they must be proactive. whether it turns out to be a crime, a terrorist hijacking, a suicide or a mechanical failure, there are lots of bad guys and girls, if you will, listening around the world and there can be copycats. so no matter what it is, it is very wise for malaysia air to be proactive and close all the loopholes, gaps and problems that this tragedy has brought to light. and it's smart to do that so, no, they should not wait. they should move immediately or sooner. >> is it likely that no matter what the outcome here, some sort of change that would be imposed involving all particularly maybe transatlantic or overseas flights that there would be a continuous stream of data information so that control towers know where a plane is or what kind of conversations are taking place in the cockpit, alan? >> well, as i said, i guess four weeks ago now in "the wall

street journal," yes. i think we're going to probably see a movement to put on what they call smart black boxes. there's a big argument whether or not these black boxes could even be made to talk to satellites constantly or if you could have a system where the black boxes would do a data dump, if anything seemed to go wrong like acceleration, descents, ascents, roll rate, the black boxes would transmit to the satellites. that way they wouldn't be talking constantly but only when they need to. of course periodly like they already do with the inmarch sat th inmarsat they would update every ten minutes or whatever the band width will bear. this is a technical issue. i don't pretend to be an electronics expert but someone will have to look at that. i think it will be iko. >> that's as it pertains to the investigation. arnold, i want to get you in here, too, as it pertains to sonar equipment in the other arm of this investigation and that is trying to locate the debris,

et cetera, there isn't the capacity to get that kind of immediate information instead as you mentioned you have to have that's devices scan the ocean floor and then it's brought back. someone would then spend hours to look at the data. are we looking at potentially technology down the road where there would be that kind of immediate, i guess, grat fication on the data retrieved from these devices? >> that's really a hope but it's really extremely hard to achieve mainly for a number of reasons. one is the battery capacity on the under water vehicle and, two, transmissions through the water. so we've come miles in achievement in the past ten years. they have the capability of systematically working the bottom and getting the information back. >> all right, arnold, alan,

mary, thank you so much to all of you. appreciate that. coming up next on "the cnn newsroom" live to perth. the heart of the search operation. [ ambient street noise ] ♪ ♪ ♪ abe! get in! punch it! [ male announcer ] let quicken loans help you save your money with a mortgage that's engineered to amaze. thanks, "g."

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it's been a grueling and exhausting search for missing flight 370. crews are working in the indian ocean, more than 1,000 miles off the coast of australia. and the area they are combing

through now is about the size of massachusetts and connecticut combined. matthew chance is following the search from perth, australia. so, matthew, the australian prime minister expressing confidence today in what the search has turned up so far. now what happens? >> reporter: well, that's right. tony abbott is the australian prime minister. nie he's in china, as a matter of fact, on a visit. the majority of passengers onboard the missing malaysian airliner were chinese nationals. and so that country is particularly sensitive, particularly keen to hear the latest on the certificasearch o for missing flight 370. and it's in china that tony abbott has been sort of spelling out, we think, what he's been briefed on by the various search officials, underlining his confidence that the electronic signals monitored on four separate occasions underneath the surface of the indian ocean

are indeed the black box from the missing airliner. take a list en to what he had t say in china earlier. >> there have now been numerous transmissions from the black box or from what we are confident is the black box that have been picked up by the various devices which australia is deploying. as you know, we've got a black box detector that has been deployed from the australian naval vessel "ocean shield" and sonobuoys have been dropped by the air force and arrived in the search area. so we're very comprehensively deployed, very sophisticated equipment in the certificasearc black box recorder. >> reporter: in terms of what will happen next, australian officials say is that they're going to continue with their search. the search is carrying on 24

hours a day with those under water ping locator equipment that they are using. until such time as they decide that there's no further possibility of finding any more signals. remember, there hasn't been a signal detected for the past four days and so that point may be nearing sooner rather than later. >> and then, matthew, that's the under water search end of this. what about the aerial searches since there are more than ten planes involved? >> reporter: yes, that's right. some of them are enfwgaged in dropping sonobuoys into the area where the under water search is taking place, but they're also searching for debris, possible wreckage from the airliner in a slight t slightly different location. they've taken into account the currents and the winds and where the wreckage might have been and so, yes, they've been covering that area or been up on one of those flights within the past few days, very, very difficult to see how they'll find anything. in fact, we didn't find anything

there. in fact, nothing has turned up that has been linked to that missing malaysian airliner so a very big challenge for the flight crews. >> mysterious indeed. thank you so much, matthew chance in perth. we'll continue our team coverage of the mystery of flight 370 but next we'll take you live to augusta, the national golf club. the masters is under way. all eyes are on this guy right here, bubba watson. he's right now atop the leader board. cnn's rachel nichols will join us live next. ♪

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meaning side of the road food stall. there are countless to choose from in this town, but this one is legendary. >> seeing you eat vegetables. hmm. i like it. >> all right. we know you missed it and the good news is, you won't have to wait much longer. the show is -- back. joining us now for a preview of what we're going to see this season of "parts unknown: anthony bourdain." good to see you. your first stop this season, punjab, india. we know the sfofood is a hit. a region that can be spicy, along the pakistan border. what was this journey like? >> the food was indeed spectacular. the colors in the punjab are extraordinary. it's a very, very beautiful part of an already very beautiful country, and we looked at, you

know -- in the course of just eating and looking into the far-away past, the present kept in trud intruding. tensions along that border formed the problems in the entire region. all of us see it, feel it, live with it to a great extent every day and we looked at it right where it mattered. >> there was a free vegetarian restaurant there as well. describe that experience. >> it's the golden temple in amatar. essentially the holiest spot in the sikh religion. for about a century, quite some time, many, many decades, volunteers have been cooking tens of thousands of free meals for any and all of any faith and

of any income level to come and eat and enjoy a simple meal. >> oh, my gosh. who doesn't want an invitation at the table with anthony bourdain? don't miss's season premieemier tomorrow night, 9:00 eastern time and immediately after that, 10:00 eastern time, the season premiere of "inside man" with morgan spurlock. the doubleheader of premieres right here on cnn. then there's golf. tomorrow, and, today, of course, too. a new masters champion actually would be crowned tomorrow. we'll find out who that's going to be right now. bubba watson is on top of the leaderboard but anything can change. we know that's how augusta rolls. cnn's rachel nichols is there at the legendary golf greens. all right. so, raging, you're also hosting "all-access at augusta" 2:30 eastern time. what's on tap, then and now? >> the specialists are great.

taking you behind the scenes at one of the most exclusive spots in's world, certainly the golf world. what's going on through the voices of a lot of the champions who have won it before. listen to two-time champion ben crenshaw describing why being here is just so special. >> and you see how immense and vast the place is, and giant trees. you know, sloping hills, and the greens are just amazing. in themselves. the fascination of playing that course is that it tempts you like no other course. and -- when you see them, to have that coat ready for you, it's -- it's pretty magical. >> coming up on this special, you'll not only hear from crenshaw but also get a feel of the course from arnold palmer, tom watton. it's going to be a lot of fun, and also you're going to hear about the landmark around here

that a sitting u.s. president tried to get removed. we've got that story as well. >> gosh! can't wait to hear about that. i've been there. a beautiful course. this is the best time of year, all azalea, in bloom. a spectacular experience all the way around. so now how about today? or this weekend? you've got no tiger, no phil there. none of those regulars, but bubba is at the top of the leaderboard. like we said, anything can change. this is an exciting time for him, too. isn't it? >> absolutely. remember, he won this tournament a couple years ago. we know he can do it. he has the experience, and he's just playing so much more freely than he did last year when he didn't do as well. he was saying that some of the obligations of being the defending champion, they weighed on him too much. too distracted, couldn't focus on his game. he's certainly able to focus this year, that all that pressure is off are and strung together five birdies yesterday. he has yet to go out today. certainly he is going to be a force to be reckoned with and,

hey, he went to the university of georgia. he's very popular here as well. a huge gallery. >> right. a lot of excitement for him. and he's got quite the bubbly personality, too. you kind of enjoy being in this company, i think it seems. thanks so much, rachel. appreciate that. join rachel back here at 2:30 eastern time today for "all-access at augusta." a bleacher report special. right now, stay tuned. "your money" with christine romans is up next. i'm fredricka whitfield. see you in an hour from now. \s

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there is no place to hide. wherever you go, someone is watching, waiting and trying to steal your personal information. i'm christine romans. this is "your money." from the soda machine at work to the ticket machine at the train, to a phone charges kiosk at the airport, hackers are lurking everywhere and you are their prey. this week we learned about the heart bleed bug. the worst security hole the internet has seen. a fatal flaw in software that was supposed to keep your passwords, bank information and other personal data safe. the websites you trust, the websites you use every day, are racing to upload a fix. but the heartbleed bug existed two years and giving hackers plenty of time to take advantage. that's the latest terrifying headline. last year, a recordum