remains of their loved ones could be found if they wanted them praut to the surface. some chose to and some let them lay as a final resting place. >> >> because that's what many people do any way. thank you very much. we appreciate it. this is cnn breaking news. this is a cnn special report. i'm don lemon. welcome to our viewers in the united states around the world. we have breaking news. the search area for flight 370 has narrowed significantly. 13 ships, 14 planes are expect ed to search today. crisscrossing an area that's about 7,000 square miles smaller than yesterday. the ocean shield's 24/7 search with the navy's towed pinger is still on with nonessential equipment turned off to minimize noise. as the search goes on there are more questions than answers. you have been sending your questions by the thousands and we have top aviation and security experts standing by.

like this from ed. it says if flight 370 landed intact on the ocean surface would it be completely crushed by the intense pressure as it sank to the bottom? i want to go right to cnn reporters in the search zone michael, i will start with you. what are you hearing in perth about the search efforts? >> it's ongoing, as you said. the planes have headed out. there they are searching that area as they have been now for weeks. the ships are out there, too. more than a dozen ships. one ship that is towing the pinger locater that u.s. navy had, they are going up and down slowly trying to find anymore pings. we had two last week and two pings on tuesday and looking for

more before they run out. this is day 34 for the batteries on the locaters. they are meant to last 30 days or so. so they are running down. the more pings they can narrow the search down. they have the ship out there towing it around. interestingly we were on a website that tracks ships a few moments ago and saw a british ship the "hms echo," it is a ocean ship that can map the bottom if you like. it is headed in that direction which is interesting. we havent heard anything official on that. they might be looking at the ocean floor. that part of the indian ocean we know more about the moon's surface than we do about that floor bed, that seabed there. one of the big concerns is there is said to be meters of silt on the bottom there. if something like a flight data recorder broke free from the plane and headed in to that silt

it is going to be hard to find ping or no ping. you are sort of in the dark literally looking for it. those pings all important as they try to pinpoint where those boxes might be. don? >> michael, when we last spoke you said the planes haven't taken off yet and the weather was great. it appears to be beautiful behind you. is it cooperating with searchers today? >> it is actually. there's a little wind out there in the search area. here it's warming up. classic sort of perth autumn day. out there, it's a little windy and cloudy, could be rain, as well. we heard one plane firing up here. the chinese planes that go out, as well, we should point out go out from perth airport which is miles away and they are probably already up and out there. there will be a dozen planes in all out there searching, looking for debris. interestingly a lot of other boats. the one that is towing the ping locater is pretty much on his own in that tight search area. the rest are way further west,

several hundred miles further west. why? because if there was any debris, there's been a series of storms over the last few weeks, and that's the direction any debris would have gone because of those storms. now, the flight data recorders might be on the bottom where that locater is at the moment but the debris could be much further west and that's why we see ships in that area looking for debris and one ship tows the ping locater looking for the all-important black boxes. as i say, it is interesting to know "the hms echo" this british ship maybe heading to that area. might they be going to map and see what they can find on the ocean floor in we will find out. >> at some point they will have to do something else because the pinger battery will run out. we appreciate that. angus houston said he is optimistic the aircraft will be found in the not too distant future. the families of flight 370 have thaerd phrasing before. how are they handling the latest

developments? >> well, it's tough. people are in limbo. i have to tell you from the last briefing we had here from the acting transportation secretary in malaise dwra, he said it's very important for authorities there off the coast of australia to locate debris that can be positively identified as part of the plane because that will set in to motion an entire process that will include setting up a time line, and then flying the family members, who are here in malaysia, off to what he called a minimal base in perth, australia, where they will wait there for the next step in this saga. so, a lot of people here waiting to hear the first debris has been located. don? >> we can certainly understand why. waiting every word. thank you so much, joe johns. we appreciate it. i want to bring in mike dean, a deputy director of salvage and diving for the u.s. navy and the airline and chief of airline

ratings.com. we didn't get a press briefing today. the first day in a while we didn't get one. do you see any potential setbacks for searchers? >> no, not at all, don. i mean angus houston is really a man of few words. he will only draw us together when he has something significant to announce. at the same time, a lot of the information has to be processed and analyzed. i think clearly when they have something to say they will say it. i don't want to sort of raising false hopes or that sort of thing. so i don't think there's anything significant at all. from what i'm hearing, off the record, they are absolutely certain they are above the final resting place of mh-370. clearly they want some definitive thing, like a piece of wreckage, a piece of debris

to say yes we have absolutely found it. off the record, they are absolutely certain. >> mike dean, what does your gut say -- were yesterday's pings the last pings we are going to get? how much could be left in the batteries? >> certainly could be more battery life and we hope they are not the last pings, but again as we continue to track and try to triangulate to a smaller search field, it's very encouraging that we are still getting some feedback from the pingers. >> geoffrey, angus houston was asked when would the drone start to look for debris and he said it wouldn't be far off. but isn't time running out here and we heard the hms echo is heading out. so there are signs this might be happening sooner rather than later. why not send it now that the batteries and pingers are going out. >> the last thing you want to do -- >> i'm sorry.

>> the last thing you want to do is introduce another noise source in the area where you are trying to listen carefully and the auv will produce noise. it's not uncommon to get false signals from any equipment that might be producing noise whether it is on the ship, the auv or perhaps something in the tpl itself. you want to make sure you are keeping random noise out of the search area. >> geoffrey, do you concur? >> absolutely. the matter is the pingers can cover six times the area that the bluefin-21 can. they want to be certain they max out on the possibility ies of t batteries being live a couple more days. the bottom line this wreckage is going nowhere. it is not going to move from where it is right now. the best opportunity is to continue to search for pings. along that line, also, the royal

australian air force are dropping sonar beau buoys and they deploy 1,000 foot cable and on the bottom of the cable is a hydrophone. not as good as the pinger locater but they are hoping the sonar buoys, i think they are dropping 50 of them will pick up some signal to help triangulate and reduce even further the search area. >> mike, i want you to look at this e-mail. i thought it is a good question. ed writes, if flight 370 landed intact on the ocean surface would it be completely crushed by the intense pressure as it sank to the bottom? it's a good question. >> no. because it is not a sealed vessel. water will find a way in through some breaks in the structure. so it's not like a pressure vessel that you will take down and eventually it will implode on itself. it will slowly flood up as it

will sink. >> stick around, mike. i want to bring in jeff wise, author of the science of your mind and danger. the former inspector general of the transportation and lieutenant colonel michael kay, a former adviser to the ministry of defense. david souci, author of why planes crash. jim till mon ocean search specialist rob mechanical. michael kay, first to you. you are about 70% convinced we are in the right area. why not 100%. >> i think it is usually positive we have four pings but we have to remember there are constraints with the ping locater. it measures signal strength. it doesn't geo locate. that means there are a number of things that can affect the signal strength. we already talked about the batteries and know they could be weak. but the range f the pinger locater is on the outer limits

it will appear weak. also pressure, temperature, it all affects the signal strength. as it goes toward the proximity the signal strength will increase but as it goes away it will decrease. i think there are all of these factors we heard about from bouncing of echos on thermals in the ocean that decrease the accuracy of that. i think we have some time to go before we have unkwif call evidence. >> you have been under almost three miles of water. claustrophobia for most people would be unbelievable and probably the pressure. if the plane is down there, what is it like that deep? >> it's a very quiet place, which is funny because we are all talking about acoustics. it's a calm place and very, very dark. relatively even temperature, just below freezing. i described the bottom for north americans who just came out of a brutal winter as being a

hard-packed snow with a light dusting of powder on it. we actually want a little current because later on when we are stirring up the silt looking around for the black box, we want the silt to blow away in the breeze if you like. >> you are down, i would imagine in a submersible that is especially made for that. because not many people go down that far. the pressure is intense and this has to be a strong vehicle to go down that deep. >> that's true. at the moment, i think there are six vehicles in the world that are capable of this depth. china has one, japan has one, u.s. has one, russia has a couple and the french have one. so they are a rare beast, indeed, that can get to these depths. >> jim, are you surprised we haven't found any debris yet? should we discontinue the visual search? >> oh, no. absolutely not. i think it's extremely important that we continue until we in fact find debris. it's out there.

it's got to be. an airplane fuselage is like an egg shell. once you crack it open, it's open and things will come out through that crack. we just have to find it. i agree with something said earlier. we just haven't looked in the right place. >> to you, jeff, five weeks out, the fact there's no debris, no debris has been found, does that give more credence, do you think, to the scenario the plane could be under water, more or less intact? >> well, you know, it seems like such an extraordinary chain of events to be required in order to get a plane -- i mean the 777, as one pointed out earlier this is a much bigger plane -- >> what is ordinary about this case, nothing. >> that's true. what's the alternative to being in one place on the bottom? it's fascinating to me that we spent so much time looking to the east of that famous southern

arc because the currents were going to carry everything to the east and now looking to the west because we're in a different latitude and now everything moves the other way. think of all the time we were looking to the east and all of those currents and storms were carrying everything to the west the whole time. we were looking in the completely wrong part of the indian ocean. there's two different explanations, at least, for why we haven't found anything. who knows. >> all right. you haven't spoken yet. you will get a chance. stick around, everyone. we have a lot more to talk about and we will be answering your questions about the flight for flight 370. make sure you use the #370 qs. ameriprise asked 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?

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ocean shield is towing this pinger locater searching for flight night. my experts are back to answer your questions for you. this tweet is for david. it says will the extreme cold of the deep ocean help pinger batteries last longer? any mathematical estimates from your experts? >> i don't think it will. it is supposed to go 30 days. it has a buffer but that includes the testing at cold, hot, whatever temperatures, but not hot hot temperatures, of course. but normal operating temperatures. the cold temperatures don't extend it. >> we have this the e-mail from pat sutton. she said earlier today, miss schavio said earlier flight has

an alternate airport to use in case of emergency. what was flight 370's alternate airport and could that have affected the flight course? mary? >> the alternate airport has to be an airport kind of near where you are going. in other words, if beijing had an emergency or you couldn't land. the alternate airport is where you would land near beijing if you don't couldn't get in though airport. it shouldn't have affected the flight or caused the flight to go on the path that it did. every flight has to have it and they have to have an alternate airport for their flight plan and enough fuel to get to that alternate airport and 10% beyond that. i don't think it would have caused the vast deviation. don, there's something i did. i pulled up the list of the debris. there is a similar crash of a 737. we are wondering why there was no debris. in that case they couldn't find the plane a month. they put out a reward for debris.

at the end of the front were only 100 -- i have the list here, only 194 objects from the entire 737 which broke up. this was in an area where people were actively looking for it in the islands of indonesia. i guess i'm not surprised we don't have debris. in this case there was head rests, tray, one piece of the tail and one piece of aluminum and that's it. not finding debris doesn't assume it is all together but it is a vast ocean and even on this plane there wasn't much left floating. >> it's amazing. we keep thinking why hasn't anything -- but the ocean is a very big place. this is from robert and he says will the atmospheric pressure damage the black boxes? >> no. they are specifically designed to function perfectly well down to 6,000 meters. at the moment we are at 4 1/2

maybe deeper in the end but within the capabilities of the two black boxes. >> this is from steven. he says who should be first to open and read the data from the plane's black boxes if it is recovered the malaysians or the ntsb? >> i don't think it will be the ntsb. i think it will be the jacc will have the call on that. so i would imagine that any coordination from the jacc from the particular aspects of when we go from finding the black box to getting the data they will have the call on where that goes. >> this is from ken from jim. it says what if we find only the black boxes but no plane wreckage. what improbable bizarre crash theory will we come up with then? >> we will have a lot of information. it certainly won't be anything ideal. but the flight data recorder is one i'm excited about. it has hundreds of different

parameters. you will know all kinds of things about what was going on that airplane. it goes for a very long time. it's not looping like the voice recorder. you will have a complete history of what happened with everything every component on that airplane for its entire last legs of its life. you will have a lot of information. it will be pretty empty because we really need the airplane. >> that's the focus for jim on the black box is a black box is a black box rather than wreckage. because we need the black boxes. >> we desperately need them. it will answer so many questions. >> this one says if a plane landed on water wouldn't the life rafts and slides deploy if the plane was floating intact? >> most of the life rafts and slides are not automatic. so not necessarily unless people actually manually opened the doors and popped them out. so there's a lot more to that. that's part of the certification of the aircraft which is far

part 25. it goes beyond that and i want to point out with the landability, i'm glad mary brought up the 737 accident. because over the last 50 years this certification for ditching has been improved and improved and improved and this aircraft has breakaway engines. if it hits water the engines are supposed to break away. if it is landed at the proper angle, which we don't know if it was of course, it could survive that much more easily than in the past where you see the aircraft tumbling through the water. this aircraft was designed specifically by the nfar 25 to improve the survive nblt the event of a ditching. i'm more optimistic about the fact this aircraft might be in substantial size pieces and not have broken up in to a lot of little pieces as was successed before. >> i have to ask you a question, mary and i don't want to come off as morbid but richard quest and i talked a bit last hour

about families may want to, if they do indeed find bodies, the families may want to leave them there as a final resting place. that question does come up, doesn't it? >> it does. it comes up in every kind of accident and it comes up in the accidents on the land, too. because there are always comingled remains and there's a process where there is a joint resting place, where they memorialize, sometimes on the shore near an area where there's been an accident in the water and then even on the ground sometimes a joint memorial where all of the coe mingled remains are put to rest and the families, at least under u.s. law, there's a law in china like this where the families can say what they want done with those remains and it's their right. >> thank you very much for that. when we come back, much more on the deep sea search. we know more about the moon than we know about the ocean floor. how difficult does that make the search for flight 370? when folks in the lower 48 think about what they get from alaska,

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the surgery area for flight 370 narrowing. even if we are closer to finding the plane it could be miles below the surface. our experts are back to talk about the difficulties of deep sea search. i will start with you, rob. let's talk about how deep it is. we talked about the depth, where they believe the pinger signal is coming from. taller than the empire state building, deeper than where the "titanic" was discovered, the underwater sonar device can work at a maximum of 14,673 feet.

are we pushing the limits of what is technologically possible? >> not techno logically possible all together but for the bluefin and the manufacture at the bluefin at the moment is looking at how far they can exceed the depth rating for the device. there's always overengineering in these things and they maybe over 10, 20% but there are vehicles that go to 11,000 meters or 36,000 feet. >> there's a possibility, right because the flight went on for seven or so hours it's believed. if the black boxes don't reveal what happened on the plane, what other tools will investigators have? what is it, the black boxes do about two hours before -- >> yes. i mean, the black boxes record

the last two hours of voice transmission in the cockpit. the flight data recorder records a lot further back than that. the next step will be sending down a r.o.v., a robotic submersible that this is a work class rov. it is industrial strength if you like. able to bring back quite large pieces to the surface. if you get the black boxes, you don't usually need to go back too much further with forensic examinations. >> what if they don't reveal everything? like i said, this flight flew on for more hours than usually, i guess the cockpit voice recorder usually records. david, correct me if i am wrong here, is there is a possibility that the black boxes won't have all of the data on it and what if it doesn't? what will they do then? >> i have been hesitant to bring this up previously. when we talk about the flight

data recorder. if there is something nefarious going on if transponders and things were turned off, the black boxes can be turned off from the cockpit. so it could be that these boxes don't have any information on it if there was something with intent done to that aircraft, as well. if it is not available, there's a lot of information you cgain the materials if it was a fire inside, a lot of information we would be able to gain from wa is going on including without being too morous but the condition of the bodies, the lungs and that sort of thing as well which are part of the session. >> you think they will be able to find enough of the material then. considering you said it could be scattered for miles. >> i do believe that. hundreds of miles would be more than i would expect on this.

from what we can tell, it was not an in-flight breakup which is where you find scattered debris for many many miles. i mention before the ability for this aircraft to ditch without being totally broking in to thousand of small pieces is less likely in my mind. i think we will find substantial pieces of the aircraft that could be used for our investigation purposes. >> it is interesting we didn't talk about that but that is a possibility that the flight data recorders if there is something in t in theo nefarious. would you character ize it as a miracle? >> a week ago, we were talking about how they had the tow fish, the towed pinger locater, they had it on station ready to use but they felt like there was no point in deploying

it until they had debris on the surface to narrow down the search. we got so close to the end of the battery life of the pinger i guess they decide we might as well give it a go and lo and behold they are getting a signal. so it's kind of a one in a million thing unless there's some aspect to the search that we don't understand. that there's some other kind of information that the authorities have that we don't. in fact, i would go so far as to say, if this signal turns out to come from mh-370, i'd be very, very wondering if there was some other information behind it. because otherwise it's too coincidental. >> that from a writer very, very wondering. i like that. >> this is what this case has done to me. it has taken my words away. i have no more language. no can speak. >> could there be information we are not getting?

except for last night, that i took off, we sit here and usually when the ships go out and as they hold the press conferences and we learn everything there is to learn about this, we think we are, at least but could there be information not given? >> it goes back to the phases of the investigation, the where, what and why. david brought up a bril yabt point about the black boxes. we shouldn't invest our hope in the what, the why is a mystery. we need to rewind back to where the last transponder ping was. when you try to understand why the echo wasn't picked up on radar as it crossed malaysia and as it passed sumatra and headed south. i don't think the black box will give you the why. the importance of looking for the surface wreckage and the other wreckage on the ocean floor is key. twa flight 800 there was a big explosion just behind the cockpit of the engines. something on the fdr isn't going to tell you there is an explosion around the cockpit.

it is important that we look at all of the factors from where we lost the aircraft and transponder, talk to the malaysians and create as much surface wreckage as possible. >> our expert, you sat next to him the other night, he said everything if there is a mechanical or electronic issue on the plane by listening to the sound they can determine that. he said that the other night. >> he's right. for instance, you would be able to tell -- quickly. >> if it ran out of fuel but not tell why it happened. you wouldn't be able to tell why the transponder was turned off. you will know it is off but why. that is what the black boxes won't tell you. >> thank you. paying the price for the search. nuclear subs and high-tech equipment. how much is it costing and who's picking up the tab? s 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

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unprecedented says a former lead investigator for the naushl transportation safety board. >> during the history of aviation, we have never had a challenge that even comes close to this. >> reporter: more than two dozen countries, seven contributing the most and australia taking the lead. 80 ships and 61 aircraft all part of the effort to locate the plane. the greatest challenge, the remote distances of the search. >> a tremendous percentage of the resources whether it is aircraft, ships or personnel are spending their time getting there and getting home. >> reporter: that comes with a hefty price tag. with some estimates suggesting a cost of $21 million a month. most of the money coming from military training budgets. some from humanitarian organizations and now from u.s. navy operations. for example, a navy p-8 aircraft costs $4200 an hour to fly. the pentagon originally designated $4 million srt search

but has already spent 7.1 million on planes, ships and underwater surveillance equipment. how does flight 370 compare to other aviation disasters? the two-year search for air france 447 cost roughly $50 million. the twa flight 800 investigation and recovery costs about 40 million. in 1996, one of the longest investigations the ntsb ever conducted, swiss air 111 which went down off the coast of nova scotia in 1988. the search, recovery and investigation cost $39 million over four years. what of the collateral cost of missteps in the investigation. >> frankly the malaysian government hasn't handled this at all well. and that's clearly cost time and resources. >> reporter: the many governments engaged in the search already own the assets

including ships and planes. so one way for them to look at this is an extended high stakes training exercise. joe johns, cnn, kuala lumpur, asia. >> i want to bring in my panel of experts for more on this. that's a lot of money, mary, when we look at the other air disasters, 50, 39, $40 million. the price tag can be enormous for one of these investigations. the navy has sent $7.1 million. can they expect reimburse and do they expect reimbursement down the road? >> they probably don't expect it but they can sue for it. in other air crashes where there's been extensive amounts of money on search and recovery, the various governments, including at one point the other crash that i mentioned indonesia sued to get recovery for their costs. so with the insurance policy, probably about a billion, they can expect to be sued for some of the cost of the recovery,

sure. >> jim, what kind of cost will the airline incur? what kind of costs are they incurring now? >> the airline is incurring costs on a number of levels. one obviously the daily cost of operating under these circumstances, dealing with the families and that sort of thing. i think that you are going to find some not so easy to recognize costs in the image they have now established for themselves and how they operate and how they don't operate. i'm afraid that before this is over there will be a lot of information that will be uncovered that will be very embarrassing and very expensive for the malaysian government. >> david soucie, what about a time limit? how long should the united states -- how long will the united states stay dedicated to this search? >> probably as long as they are still invited and they are contributing. the fbi, i know, has been involved from the very beginning. >> even though there are only a few americans on the plane?

>> yeah, i think so. it's a -- i think it's like a maritime order. when you have a ship in trouble you go help it. this is not under that order but i think that this is where the united states is proven to be available for whatever it's needed for, even if there were only a few people involved in that plane. >> what joe's piece in the story didn't mention is these are mainly military assets being used and as a former military pilot, what do you think of that, mikey? >> i think it's the best equipment for the job, don. when you look at the state of the art technology like the p-8 that only initial operating capability only last year and has the state of the art equipment on it. there isn't anything i can see in the civilian world that will have that kind of equipment and be able to deploy those assets as long as they have. we heard the other day that there were 133 missions that were known. you have the australian air crews flying around the clock.

you have the naval and maritime staff working all the hours god sends in order to do this. i think it would be a different story if it was handed over in completely to civilian agencies. >> david, question for you. you know the former ntsb chairman bon bob francis mentioned there is a cost to the way malaysia handled the investigation early on. what would you estimate that cost to be? jim till mon talked about it a little earlier? >> i have to disagree with jim a little bit. in that while it did cost time, i was thinking about in the other day and if someone came and armchaired the investigations i have done i'm sure there would be a significant am of waste in those because it takes a while for a team to gel. i have to have empathy with them and i believe that is what happened here. it is an inexperience to some degree. now we have angus houston, the chief air marshal heading up

this thing, it's going to the point and things are getting down. i don't think i could speculate how much waste there was. there certainly was, i agree with jim with that, but is it necessary, it is possible it that was in my mind. what lessons have we learned from the hunt for night flight and how can we be sure nothing like this will ever happen again?

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the surgery area has narrowed but after a month we still don't know what happened to flight 370. what lessons can we learn for the future of flying? anna cabrera is at the aviation repair and overhaul con venge in phoenix, arizona, where the industry is debating that question. >> reporter: we are at a gathering of agency insiders from airplane manufacturers to parts makers and suppliers to airline representatives. there's a buzz about the mystery of flight 370. everybody has a theory of what might have happened but people don't want to talk about that because no one really knows. instead the conversation is more about what could prevent a airplane from going missing in the future? and insiders are telling me it comes down to better tracking,

perhaps better emergency alert systems and perhaps even changing up who can control what. >> the aircraft so much redunn densecy in them. the pilots are so well trained usually aircraft don't just disappear. >> it would be amazing to me after all of this there's not a system in place that actually tracks path realtime like we see in our daily lives. >> reporter: the the u.s. is already working on this. in fact, the faa has mandated there is a new aircraft tracking system that uses satellites in place by 2020. that would apply to flights that go through u.s. air space. now some think that because of the missing plane that this will all be sped up or at the at least will bring the global aviation community to address these satellite tracking capabilities on an international scale. don? >> thank you, anna cabrera for that. i want to bring back my panel of experts. mary, what are we learned about

air travel after night fligflig what changes do you think should be made after this? >> i think what we have learned is we can't rely on outdated technology to search the ocean floor to find '60s technology black boxes. we have been having this debate since september 11th 2001. i think we have to replace black boxes with glass box meaning the data can be and should be continuously downloaded and we wouldn't be in this position. that's the most important lesson. there are many others but that's one that has to change and it will take federal regulations to do it or the airlines will not. >> glad glad you said that. those who are lay people have been sitting here going, i can't believe this technology. i have better technology on my cell phone. we have hundreds of families sitting, waiting and waiting in anguish and we are spending millions of dollars for information that we could have had, you know, in realtime.

what are the changes that have been made to air travel after the past plane disasters, david, do you think? >> well, let's talk about the black boxes for a second. like mary said, they have advanced to about 1970 when they went to -- i guess '76 when they went to a all-digital solid state type environment. before that it was a metal tape that actually scratched the altitude in to this metal tape. so there's been advancements, but since 1978, which is when the deregulation act went in the place it has been difficult as an faa inspector it was difficult for me to mandate any safety requirement. at that point, after deregulation, i had to do a cost analysis and determine this safety recommendation, i had to figure out how much it would cost the airline and that was put forward to say here's how much it will cost. is it worth it or not? that's the crux of this. this is the why michael was talking about earlier.

not only why are we not this or why someone did what they did, but why are we sitting here, trying to rush this investigation when we should have 90 days on the pinger and should have 90 days to do that. why are we here without the information of where the aircraft was located, what happened what information did we not have that we should have had. and mary has been a big proponent since 9/11 to get this done where we have a constant stream of data. why is it not happening, they have been gutted with deregulation and they are having a hard time saying this has to be done. i don't care what it costs. let's move forward. >> perhaps even longer. some people wonder why is it longer the battery life on the black boxes. robert, anyone who has watched this program over the weeks know that i'm fascinated with deep sea, with the deep sea. one of my favorite documentaries is "blue planet" by the bbc.

and it's fascinating to me that we don't know as much as we shoufd about the deep sea. do you think this missing flight 370 will drive us to learn more about the deep sea? >> absolutely. i think it's been one of the positive things that's come out of this whole saga has been that everybody now understands that even in the most remote part of the ocean there is debris. there is garbage, trash floating around. i think people have learned about underwater acoustics. they know more about how the underwater of our planet now. from an environmental perspective it has been a positive lesson. >> yeah. thank you. we'll be right back. ♪ [ banker ] sydney needed some financial guidance so she could take her dream to the next level. so we talked about her options. her valuable assets were staying. and selling her car wouldn't fly. we helped sydney manage her debt and prioritize her goals,

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>> you know, there were people a week ago who thought we'd never find this plane. and now there's optimism. rob, what do you think? >> yes, i think we'll find it. i think the acoustics, we'll get another day out of that, then launch the blue fin and other sonar assets and you'll have your first imagery within a couple of weeks. >> jeff, optimistic? >> not so much. i'd like it to be true, but if this doesn't pan out, we're out of options. >> i agree, we will be out of

options if we don't get something out of there. we've thrown everything we've got, got to get something back. >> thank you very much for joining us, all my experts and my guests, i'm don lemon, thank you for watching, goodnight. >> good evening, tonight's searchers get closer to finding the wreckage of 370. first, though, breaking news, the heroes emerges and a high school sophomore charged as an adult. the 16-year-old suspect we're not naming, two kitchen knives and five minutes of terror. >> my best friend stepped in front of me and he got stabbed in the back. in 30 seconds, i saw three people get stabbed. >> you'll hear more in just a moment. she helped save the life of one of her friends. 3