navy operation, the blue fin 21. it's not. the u.s. navy wants to help. don't have search and recovery assets itself. it outsources that to a contractor. they have one blue fin 21 that they bought. it's a reconditioned unit. they bought this in the spring of 2012 just before our search. that's why there is only one blue fin 21 because the contractor only has one bluefin 21. is it the right technology or the contractor? i think these questions need to be asked. >> we're asking them today. i imagine the families are saying throw as much resources as you can as possible. thank you so much. coming up we will take you live on a ship to see the challenges that investigators are facing. how the underwater landscape could mean that sonar technology that they're using is wrong. starts with back pain... s ly ...and a choice. take 4 advil in a day which is 2 aleve... ...for all day relief. "start your engines" >> you know those five dollar words we all wrote on flash cards and we studied so much before the test to get into college? here is one for you. propen queuet

you have divots in the ocean floor and so the blue fin is going to go around those. cause these are not realtime images. you're not going to know until it gets back on the ship. it's going to be quite the delay. one good thing is to see that this area is a little bit shallower. we have been searching 75,000 feet. >> that's good. that's interesting seeing that graphic and how that may happen. and experts are seeing that this could continue expanding. how big of an expansion could we be talking here? >> we have been talking about the little pings and we have been searching a six mile radius. it's about 120 square miles and that's taken what? about a week and a half? if we make up for all of this area that we have missed in between you're looking at roughly the size of los angeles. that's 484 square miles and at the rate that the blue fin is going, you're looking at anywhere from 47 to 50 days. >> there are many more days. >> if the plane's flight data. they are not the only source of potentially vital information. we have learned that data. crew members -- could be retr

the issue is how much of the ocean bottom is the blue fin ablg to get over. i wouldn't read too much into the fact that the ship is staying stationary. >> the blue fin could be going back and forth and it could just be on top of it? that doesn't tell us a thing? >> absolutely. >> that's what i saw. let me show you this. i said wow this boat, this ocean shield essentially came to a stop, and that's great news. if it came to a stop then maybe this blue fin found something. here is australia. here is the indian ocean. that, brooke, that dot is what they have it down to right now. that is it. that's about 49 to 50 square miles here in that polygone. but something else, we know that as the pinger went across, it found the two hours and 15 minutes worth of pinging. they found a sofar layer, or a deep ocean layer. if the ping ser here, there is something, it's the same reason why when you were a kid you could listen to your short wave radio and hear radio moscow because these frequencies can bounce back and forth and give you an error when you think you're close but

they will finish the mapping with the blue fin. to pick up or manipulate or handle any of the wreckage, they will have to send in more complicated or a different form of a submersible. one that has arms that can be manipulated or even there are manned submersibles that they can send in. and the sad terrible task, there are remains and human lives to be considered and they will have a demort service to come in and handle and consult with the families on how they want the remains handled and that is the most awful thing of all. >> terrible. and we know that the phases in which recovery would go through would be first trying to get the black boxes and then going back trying to see if they can recover bodies which certainly would matter a lot to the family of these victims. we will be right back with you. coming up, more on the special coverage, including the oil slick that was found. what clues could that give us? and we're getting word that a russian jet has flown around a dozen times? what does vladimir putin think is in play here? t

all this will happen if the blue fin is successful, if not, then what. nd 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 that powered the farm that made the milk that went to the store that reminded the man to buy the milk that was poured by the girl who loved the cat. [ meows ] the internet of everything is changing everything. cisco. tomorrow starts here. we are the thinkers. the job jugglers. the up all-nighters. and the ones who turn ideas into action. we've made our passions our life's work. we strive for the moments where we can say, "i did it!" ♪ we are entrepreneurs who started it all... with a signature. legalzoom has helped start over 1 million businesses, turning dreamers into business owners. and we're here to help start yours. [ male announcer ] even more impressive than the research this man has at his disposal is how he puts it to work for his clients. morning. morning.

as far as we know the blue-fin is scouring the 5% of the search area. nderwater drone is working off australian's coast in a remote part of the indian ocean. the blue-fin was forced to cut short its mission yesterday and return to the ocean to deal with technical problems. . michael holmes, what are you hearing about the blue-fin's progress? how close to finishing the last 5% is it? >> reporter: very close. should be in the next couple of hours that we will hear how that mission has gone. mission number 13, as you said, had a bit of a software glitch apparently. that mission ended pretty quickly. then they got 14 under way and should be be done soon. before 14 began, they said 95% of that more focused search area that we have been talking about had been covered so we would expect that mission 14, when it surfaces, will lift that to 100% of that area. also confirmation of what we have been talking about in recent days and that is that the next area to be looked at just adjacent to that current six-mile radius you mentioned where the most promising acousti

the blue fin has scanned this area. nces of finding anything? slim to none. >> we have learned that an american journalist has been set free. he has taken to twitter saying i am out and safe. thank you all for your support. i had no idea i had so many good friends. this came hours before president obama stood and said we are days, not weeks away from tampering. you cranian forces reportedly killed five prorussian militants to reclaim an occupied city in eastern ukraine. cnn international correspondent is live for us. let's talk about these ukrainian troop movements. i understand there is news there? what are you seeing happening? >> the government said they were launching an anti-terrorism operation and if images that we were getting this morning were fairly dramatic with large plooms of black smoke rising very much in the hands of these prorussian militants. the government saying they have managed to take over three check points. our team that was on the ground there earlier today at one of those check points was speaki

the blue-fin underwater drone will finish scanning the search zone five to seven days. 83 miles since mission began on monday. so far it has not found a shred of evidence linked to the missing plane so if blue-fin's mission is empty it's time for search crews to stop, regroup and reconsider. with me now to discuss this development we have david gallow, audio expert paul ginsburg and michael kay. michael, if i can start with you. if this search is rebooted after five to seven days, should the malaysian government be in charge? should we look at who is leading this for the next phase? >> great question, jim. i think the independent investigator in charge will remain malaysia but i think they will quickly acquiesce in they need help with this and we have seen five other countries come in under this umbrella. you got the uk, u.s., france, australia, and china. thank you is appropriate because of the capabilities of the ntsb brings the capabilities of the investigation from the uk and australia france and everyone brings something to the party across operations, human factor

you know, the blue fin and any sonar asset the analogy i would use is a blue fin is like a sonar or ultrao see the overall scene. the manned submersible is the surgical tool that you go in and do the mission with. although submersibles and r.o.v.'s have fine scale sonar for orientation purposes, they're not equipped to search broad areas. >> gotcha. les, officials say there's probably just a few days left in the air and surface search. the data and ping that is they've got, any investigator will tell you that you go with the leads that you have. i think there may be a reanalysis just to be sure if these days with the blue fins don't turn up anything. the blue fin 21 doesn't turn anything, but, you know, it's certainly -- it's perplexing. i was disappointed about the oil slick not having evidence of being the airplane. i can't imagine how the families feel. >> i'm with you. it's just unbelievable that no sign of this plane has picked -- has been picked up for more than 40 days. how would they reassess the search under the water? >> if the pinger reports don't pan out, then the only other t

the chief search coordinator called in the blue fin. that's the autonomous underwater vehicle, auv, that uses sonar to map the ocean floor. this is a painfully slow process. experts would have liked a few more pings. but it's likely the batteries have run out. the visual searches will probably end soon as well. but yesterday the same australian navy ship that deployed the pinger locator and the blue fin noticed an oil slick and picked up a couple of liters for testing. we don't know whether it's airplane related. we probably won't know for a few days. but the focus today on that blue fin is expected to cover 15 square miles in its first 24-hour deployment. at that rate, it could take six to eight weeks to scan the area from which the pings could have emanated. we have more on the conditions so far beneath the surface. >> the search for mh-370 is moving into a dark corner of the world that in some ways is more mysterious than outer space. >> we know less about our deep ocean than we know of the moon's surface. >> reporter: this man and hi

the blue fin and others, different areas. day they can cover about 40 square miles with the blue fin. if they put more down they can do it faster but can't do them down there with the search for the pingers. that's exclusive because they get in the way. >> i see. in the next step, put more resources down there to shorten up the search line. >> that's right. >> fair enough. pep. >>> it could be the way search crews find those black boxes. next, we will show you exactly how this blue fin 21 side scan sonar works in action. your education is built to help move your career forward. here's how: we work with leading employers to learn what you need to learn so classes impact your career. while helping ensure credits you've already earned pay off. and we have career planning tools to keep you on track every step of the way. plus the freshman fifteen, isn't really a thing here. and graduation, it's just the beginning. because we build education around where you want to go. so, you know, you can get the job you want. ready, let's get

step two would be launching a mini submarine called the blue fin 21. what does the blue fin do. kelly is the president of blue fin robotics. he joins us. good evening, sir, and can you tell us what the blue fin does. >> good evening, greta, what the blue fin 21 underwater vehicle that isson the ship does is it will dive down in the ocean, it's about 3.5 miles deep. the pressure there is about the weight of a cadillac escalate balanced on your thumbnail. in the pitch darkness it will use sound to image the bottom and put back mosaics or objects of the bottom of the vehicle. the vehicle records the data. >> i was going to ask, it records the data. it comes back and then i suspect that you download it and then analyze it? is that the routine? >> correct. the vehicle can run for about 24 hours it records the data from the censors on the vehicle. in that time period you would record about half a tera bite of data. about 150,000 mp 3 songs. it comes back up. batteries are swapped out with a spare set of batteries. after a two hour turn time on the surface, the vehicle can be put back o

than the blue fin. michael holmes, perth, australia. >>> in south korea the grim search goes on as more bodies are pulled from the sunk jennifer ri. >> 169 now confirmed dead, 133 are still missing and hundreds of memorials now mark the entrance to the school where the students on board that ferry attended high school. >> nic robertson joins us live from gijindo and what is happening. >> it is still being called a rescue. hopes are fading. how are divers recovering bodies of those trapped inside the sunk jennifer ri? >> reporter: well, in some places they're having to smash through walls inside the building. they're going through the cabins on the fourth floor. that's where they're focusing a lot of their efforts now. certainly the students were told before the ships went down, go and wait in their cabins, wait for instructions, that's why the divers are focusing there. the navy has now taken the position it has this under control. it's told the civilian divers who have been helping it that it will no lo

. >> reporter: monday, search teams deployed "the blue fin 21," an unmanned underwater vehicle equippedh sonar. the submersible will paint a virtual picture of the ocean floor. captain mark mathews is in charge of the u.s. navy's salvage operation. >> our mission right now is to look at the higher priority areas and see if there's any debris there and just to continue to keep hitting the small areas to see what we see on the bottom. >> reporter: the "blue fin 21" is working in 24-hour cycles. it takes two hours to reach the ocean floor 15,000 feet below the surface. the submersible will scan the seabed for 16 hours and draw up a picture of the environment looking for wreckage. when it returns to the ship, "the ocean shield," investigators will spend four hours downloading and analyzing the data it collected. on its first mission, the "blue fin 21" is surveying 16 square miles, an area about two-thirds the size of manhattan. authorities will redefine the search area and redeploy the sub. angus houston is in charge. >> it might be very difficult to find something, and you don't know how g

the blue fin 21 is equipped with side scan sonar, one deployed will be searching in the advice nitty the detected signals. each mission conducted bit blue fin 21 will take a minimum of 24 hours to complete. it will take the underwater vehicle two hours to get down to the bottom of the ocean, it will then be on task for 16 hours, then take two hours to return to the surface and four hours to down load and analyze data collected. the first mission will see bhu fin 21 cover an area of approximately five kilo meters by eight kilo meters. an area of 40 square kilo meters. the underwater vehicle inside scan sonar mode transmits an active pulse producing a high resolution map of the sea floor. the deployment of the autonomous underwater vehicle has potential to take us towards visual identification. since it offers a possible opportunity to detect debris from the aircraft from the ocean floor. as i have said before, aircraft wreckage needs to be visually identified before we can say this is the final resting place of mh 370. i would caution you against raising hopes that the deployment of t

we understand they took the blue fin back on ocean board h downloaded the data, i think it is a good gn they put it back in the water. many people have been questioning whether or not blue fin 21 is up to the task at hand given it is operating at its depth capacity. engineers analyzed it and believe it can go some five kilometers, but it would need to be reprogrammed. operating at these depths with the pressure, two and a half family cars worth per square inch on this little sub, and then you have this unknown terrain, they believe it is largely flat and rolling but they are not entirely sure, there's a lot of unknowns and questions, some openingly wondering if the blue fin 21 is up to the task. >> with that in mind with them trying to reprogram it to make it go deeper, if it can't do that, is there a plan "b"? >> well at the moment it seems that the australians are sticking with the blue fin 21, the man in charge of this multi national search effort believes most of the train is on the right side of 4.5 kilometers, well within blue fin 21's cap capsicap capacity, as far as we know th

is there an optimal death for the blue fin 21? >> the blue fin 21 is a standard commercial product.ed to 2 1/2 miles deep. when it operates, it operates at a height above the bottom optimized for its sensors. so if it is doing a sonar search it would be 50 meters above the bottom of the ocean. >> explain the side scan sonar. how does that work? >> so, you can think of a side scan sonar as two flash lights looking out to either side of the vehicle. they will illuminate roughly a half mile across, per pin diand 24-hour period the vehicle can image 24 square miles. >> it can pictures underwater but that is not done while the side scan sonar is on the vehicle. why not? >> that's correct. the sensors, there's two different sensor packages. there's a sonar sensor package that has side scan and some other sonars and the camera is in a separate payload. that is done because when you are doing a camera survey you are flying closer to the bottom, approximately five meters off the bochlt at that height the sonar return and imaging is not as good. no sense in having the sonars on the platform a

to houston if they are successful in finding a third acoustic event, and then they will deploy the blue fin1. and underwater vehicle in the area to try to actually find physical wreckage. there's no physical debris being found. the authorities are saying that there's so many leads that were dead ends. but analysts are saying this has to be it. how did angus houston answer those questions that journalist saying that if it isn't the black boxes from mh-370, what could it possibly be? >> he did point to the fact that sound travels strangely in these deep ocean waters. so they want to be certain, he is insisting that they find the actual wreckage, and that will be verification that this is in fact, the missing plane. rosemary? >> and that is is certainly the next part of this investigation. it's just after 3:00 in the afternoon in perth, australia. thanks to you, errol? >> how are families of passengers reacting to the latest developments. the story broke, and the relatives, as we have been talking about now, they have seen debris in the south china sea and the southern indian ocean all turn ou

personally, i do trust the towed pi pinger locator and the blue fin once we get it in the water.his is pretty advanced equipment and these are the best people in the world, both active duty navy and navy civilian out there along with our australian partners. so i only can tell you on a personal level that i'm pretty confident in our equipment but, once again, until we reacquire this, really no one has -- no one is any better off than they were a few days ago. so it's all a matter of reacquiring it and that's where we are now. >> let's say, commander, you find those two black boxes. who gets custody of those black boxes to inspect them, to determine what's inside and to le learn from it? >> a great question. here at the seventh fleet level representing the u.s. navy, my focus is on finding it. don't forget, we're still flying p-8 missions and we're still searching for debris. we'll have to take it one day at a time and really at this point it's hour-by-hour. every hour counts. i can only focus on finding the signal, getting the sonar out there to paint us a picture of what is on t

the blue fin, the key thing is whether the depth is still within the range of the blue fin auv. 're reporting the depth at about 4,500 meters. that also is the maximum depth rating of the blue fin. the auv can probably go a little bit deeper. you've got to get permission from the company that manufactured it. they have tolerances that allow them to go a little bit deeper. but if it, for example, if it was in maybe 5,000 meters of water, there may be a problem there and they may not want to risk the blue fin and they would have to bring out a different search vehicle with a deeper depth rating. so i think that's one of the first things they'll want to do, in addition to trying to reacquire these pingers, also get the best measurement of depth there. and i think they'll probably get that using "hms echo." >> go ahead, richard. >> a quick question for you, david, what is the length of the search season, if you like, before the weather turns nasty and they would have to think about postponing for winter, regrouping, if they don't find it, and starting again in the next season. >> but

at this very moment the blue-fin underwater drone is on its seventh mission under water. der water in a remote part of the south indian ocean. why is it hard to go just a few miles under water? i want to read you from "time" magazine charlie campbell. men played golf on the moon and images from the surface of mars is utterly commonplace. the hubble telescope can see 10 to 15 billion light years into the universe but a three miles under the sea that is a true twilight zone. i want to bring in our expert panel david gallow who is the hole institute and a sound expert is here and michael kay, former royal air force. david, perhaps i can start with you. why such a mystery under the ocean? is it the conditions, the money, the technology? >> sure. it requires technology. it's vast. it's covering 70% of the earth surface and its deep average depth about two and a half miles. the pressure there is incredible. you can crush the "titanic" like a paper cup in your hand and it requires specialized technology to get down there and begin to explore. >> michael, one question that comes t

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the blue fin 21 is equipped with side scan sonar. once deployed, it will begin searching the sea floor in the vicinity of the detected signals. each mission conducted by the blue fin 21 will take a minimum of 24 hours to complete. it will take the autonomous underwater vehicle two hours to get to the bottom of the ocean. it will then be on task for 16 hours. it will then take two hours to return to the surface and four hours to down load and analyze the data collected. the first mission will see blue fin 21 cover an area of approximately five an area of 40-square kilometers. the autonomous underwater vehicle inside scan sonar mode produces a high resolution, three dimensional map of the see floor. the deployment of the autonomous underwater vehicle has the potential to take us a further step towards visual identification. since it offers a possible opportunity to detect debris from the aircraft on the ocean floor. as i have said before, aircraft wreckage needs to be visually identified before we can say with certainty that this is the

>> the blue fin 21, what the navy has supplied, will be doing the work. it's a much larger system with a little bit more sophisticated navigation instruments. because it has to go so deep. this doesn't need that kind of -- that instrumentation. >> and relative to this, the blue fin 21 is how much larger? >> oh, the blue fin 21 is 21 inches in diameter. it's probably 2,500 pounds. this is 60. >> its side scan sonar -- just pointed out those two spots where you are showing the side scan sonar. >> it'll paint a picture of what's on its side. what's underneath it, it will have a gap or holiday or blank spot. >> how big of gap? >> depends how high it's flying off the bottom. but you could have a gap that the plane could possibly be in. so the big sonar systems that the blue fin 21 has will actually have to cover one and a half times. it'll have to go over the spaces it went to cover its holiday unless it has a venting system that can look down. not all systems are equipped that way. >> just quickly i want to go to you, michael kay. there are a lot of assets th

time to focus on the bottom of the ocean. >> and, thomas, that blue fin could be searching the bottomfor two months. this operation is getting expensive. at what point should they consider scaling back the operation? >> well, it's probably not something that i really have a good feel for. that's a decision that really is something that the community and the malaysian airlines needs to think about, but it does, you know, move to a fact that we really have not equipped the airplanes with the types of technology they need to be found in the deep ocean. the pinger technology, which is the cube where the airplane might be isn't designed to be te detectived after a long period of time. the pinger is most likely not operational, and we have moved on to much more arduous search process with the blue fin 21. >> peter gold. thomas outschuler, we appreciate it. >>> in public outdoors, it looks like they're having a lot of fun. it's very disturbing. how could this happen so publicly. we'll talk about that next. meatball yelling c'mon, you want heartburn? when your favorite food starts a fight, fi

the blue fin 21 that i mentioned is very slow moving. it only covers about 11 square miles in a day, and add on top of that the conditions on the sea floor. houston in the press conference saying they can expect a lot of ocean silt top so deploying that vehicle is going to be a very slow, pain staking process. so therefore they want more information. they want, in houston's words, to make hay while the sunshines. while they still believe this black box is emitting signals to narrow down that potential search field. and as i said, at the moment, that is the priority of this operation. >> all right, erin live for us in perth, australia. thank you. >> all right, let's go to sing moore now for more analysis on the search for flight 370. greg waldro in is the asia managing editor of aviation news website fly global and he joins us now live. thanks so much forç not only are they keeping the ship in the area, but they're also dropping sonar buoys. they're capable of listening in very quiet ocean for more signals. so they're obviously placing a l

the blue fin 21 underwater drone will finish scanning the search zone within five to seven days.ptions being considered. that is all coming up. >>> but we begin in the yellow sea off the coast of south korea. the ferry that capsized four days ago is no longer poking above the water. large floating bags mark its location. despite pumping air into the hull, the ship continues to slip deeper and deeper beneath the waves with hundreds of teenage victims still trapped inside. the death toll now stands at 36. divers recovered three more bodies. family members are providing dna samples to help with identification. the captain and two crew members now face numerous criminal charges including abandoning ship, negligence and causing bodily harm. the captain was one of the 174 people rescued in the very first hours of this tragedy after being arrested and charged, he appeared in handcuffs to offer his explanation of events. a tearful confession there for the anxious families on shore, the ordeal of recovering their loved ones is agonizingly slow. our kyung lah joins us now from the port cit

let's start with the blue fin unmanned sub that was dropped in the search area this morning. o deploy the blue fin 21 because they wanted to get every last ounce of intelligence out of those pingers. they didn't want to pass up the opportunity to narrow in the search zone by finding pinging whatsoever. they were delayed by both the malaysian and civil military radar lost track of the plane. whatever time they did have once they got the inmarsat data, they had to make the best use of it possible. they wrung every ounce of battery juice they could. >> they certainly did. all right, jeff, the next one to you. what's the difference between the blue fin 21 sonar and the submarine sonar. why can't a submarine do the work faster? >> a submarine is a vessel filled with people and designed to travel through the open sea. a larger and more cumbersome piece of equipment. this blue fin is an autonomous underwater vehicle. you can program it to follow closely the contours of the subsurface area. you don't have to worry so much about losing it if it runs into something underneath the water.

navy's robotic submarine "the blue fin 21" has covered more than 80% of its search area but has not found anything yet. australian officials say if the "blue fin" turns up nothing they plan on bringing in more powerful sonar "that can search deeper beneath the surface of the indian ocean. >> pelley: longest jetliner mystery in history. transportation correspondent, jeff pegues, thank you. there is no history tonight about the fate of hundreds of high school students who were trapped in a ferry that capsized and sank last week off south korea. 159 bodies have been recovered, but families are still waiting for at least 145 more. seth doane is there. >> reporter: families of the missing wait for that announcement, which only confirms what they already know. it's been eight days since the ferry sank off the south korean coast. when a body is found in the wreckage, anything that can help identify the person is posted on slips of paper. "a female with pink nail polish who had a root canal." someone else was "wearing pants with a flower print." or "a man with a blue watch." they're details and v

the robotic blue fin submarine was sent down in waters nearly 3 miles deep. takes about 16 hours to map the 25 square mile area. some of the search area is too deep for the blue fin submarine. they are bringing more subs that can dive deeper. 14 planes and another 11 ships are also assisting in today's search. >> now to the ukraine a blistering report accuses the obama administration admits to holding back body armor and radios from ukrainian troops with fear it could inflame tensions of vladimir putin. russia and ukraine are expected to sit down in geneva tomorrow. >>> ukrainian forces have keswe in to capture occupied pro russian militants. firefighters have taken over several government buildings in eastern ukraine. pulling a plug of surveillance possible terror plots in the muslim community. the program sparking controversy when come explaincomplained of unfairly targeted. new york's mayor bill deblasio says the move makes police more respectful and fair. >> it is the highest honor awarded to members of our military. and now a former army sergeant will re

earlier the blue fin underwater drone completed its tenth mission. ey're still waiting for confirmation that mission 11 is underway. >>> we do want to go back to our top story. the ukrainian president is calling for a resumption of the anti-terror campaign in the eastern part of the country. >> that comes as the body of a ukrainian politician was pulled from a river in the city of slovensk. they say he and another man showed signs of torture. ukraine's president says pro russian members are responsible. they deny any part of it. >> translator: russia must fulfill its international obligations. we are not asking from russia anything, we are only demanding to stick to international agreements and not behave like gangsters in this century. >> u.s. vice president joe biden is asking for russia to do more to ease tensions in the east. >> we've heard a lot from russian officials in the past few days, but now it's time for russia to stop talking and start acting. act on the commitments that they make. to get pro russian separatists to vacate buildings and ch

we're talking about hundreds of square miles maybe at most being covered by the blue fin out of many ousands of square miles of uncertainty in where this plane went down. and, in fact, there are areas the size of modest states like pennsylvania or nebraska that have not been touched in that area of the ocean. and those are 10,000 square miles. so the bluefin is covering an infi tez mali smart area of the sea floor. and the likelihood that it will succeed is small. what is likely to happen is that after these missions are finished, there will be a period of consideration of all the data and some thought about where the asset should really be deployed and whether the bluefine is even able to search at the depth that is necessary. and then i think at some time in the future, if the powers that be want to continue this effort, which i hope they will, then a more serious effort will be made to find this plane. >> yeah. and mary, you kind of don't want to think of this possibility, but we have to, behind the scene, do you think that investigators are prepared for the worst? for this possibi

they actually have to send the blue fin down, high-resolution data, take an actual photograph from the to be able to say here is where the black box most likely is. and then they will have to send a submersible to pick it up. it might be partly buried, so it might be very much a difficult situation to be able to salvage something at that depth. >> one last quick question for you. if indeed it gets past the point of where we can realistically expect these batteries to still be operating, we come to the conclusion that the batteries are dead in these boxes, do you think they will ever find this missing plane if indeed it did end up in the indian ocean? >> no. i mean, even if -- even if they don't get a single ping again from the blockses, the data that they -- already is sufficient to be able to do a very intensive search sta to locate the black boxes. with air france, it took two years to search. when the black boxes had stopped transmitting, it took two years for them to be able to find where and recover the black boxes. now, we're in a much better situation than that. we know approxim

that's when we're told they will consider deploying this submersible, the blue fin 21 we've told you about, the one you said is collecting dust. here's the problem, brooke. one day's work for the pinger locator will take the blue fin a full week. so if we get to that point in the search where we have to switch and start using that technology, this will be a slower, more grueling process. >> ripley in perth, thank you. let me bring in my next two guests, ocean search specialist mike williams in seattle. and you recognize this guy as well, jeff wise, joining me from new york. gentlemen, thank you so much for being with me. mike, i want to -- let me begin on what the correspondent there in perth was talking about, why not use the blue fin. here we've been using -- or they've been using the tpl. this seems like such a great lead, why not -- if they are in the ballpark, for give my lack of proper terminology, why not drop this blue fin in, in the possibility that they could hear the pings? >> well, currently we only have detection of the pings on two lines of position. and we really critic

the blue fin has scanned 26 square kilometers, roughly 50 square miles. analysis of an oil sample from the search zone confirms it was not from the airplane. australia's top transport official estimates the cost of the prolonged surge could approach a quarter of a billion dollars. we're following all the latest developments from perth, australia. he joins us now live and everyone is waiting to see what, if anything, this can perhaps reveal. >> in trip five, mission five down there runs 200 feet above the surface of the ocean floor appeared four trips completed now, they have gone between a mixture of death, from 3200 meters down to 4700 meters. you remember the first trip was aborted because the software in the blue fin 21 basically had a failsafe when it hit 4500 meters. it would resurface in that happened. they reprogram did and it has been down as deep as 4700 meters. that is quite a ways down. those trips not yielding anything in much of the evidence about mh-3700. trig number five is under way. we have spoken to people involved in the search to were t

can the blue fin 21 which is the locater. any chance it will find the black box? >> what we will do in that instance is put the blue fin in service and designed to use sonar to make kind of a map of the ocean floor and what that is going to look for is a wide range of debris. you no, big chunks of airplane and things like that. and from that map, we would hope to find the black box or, again, some other evidence that the plane is down there. >> it's expensive, isn't it? >> it is quite expensive. obviously we have got a lot of people, a lot of equipment, spending a lot of time out there. it's worth it the families are looking for this closure. >> i actually think it's worth it too. it shows a lot about the american taxpayer, about our u.s. navy. about the president and the pentagon. everyone is willing to do this and help so many families. >> i would agree with you. it shows that the u.s. navy and the military in general has quite a wide range of capabilities well beyond just defense or fighting wars. there is a lot of good we can do in the world. >> is there anythi

they are saying the blue fin 21 has 20% left to search. however that 20% left to scale is the deepest part of the area. they are wondering if a man operated device will have to be brought to the search area. previous reports about the jet. all reports need to be heeded with caution. but it certainly has new hope to folks that are looking for that plane. >> back to you. >> that is right. looking for answers thank you so much. >> police are continuing to search for the city's 12th homicide of the year. body of an asian man was found near the plant shopping center. police have not released the victim's name or said how he was killed. it appeared the man was in some sort of struggle. the man accused of setting a stud dwrio on fire busr burned building nearly to the ground. officials say there could be homeless people living inside. officials say three people may be missing. this morning we are getting an idea of how the teen hopped the fence. >> this boy hopped a fence sunday morning and eventually made his way to a boying 767 hawaiian air flig

the search entered a new phase with the launch of the blue fin 21. this is the unmanned submersible vehicle that will be going on 24-hour missions down to the sea bed at some three miles beneath the research ship, which is carrying it. now, they had hoped that they would have more pings, they would have heard more sounds from the black box before launching this vehicle. before send it down. there have been no fresh pings, no fresh sounds since last tuesday, so they decided they might as well go ahead and launch this search, but the area they're looking at 15 square miles initially, is very big, and this vehicle works at walking pace. this is an enormous challenge, and angus houston, the coordinator here, was cautious in describing how this works and the likelihood of any speedy results. he also said but they had spotted an oil slick some five kilometers -- that's about two and a half miles -- down stream from where they believed the aircraft entered the water. experts here in perth are skeptical about whether that could be related to the aircraft. the

navy's underwater drone, the blue fin 21, as you know it has scoured the entire area. , i have lost track of all of these different missions this submersible has been on but if it finds nothing, what's next? more blue fins? more auv's? expand the search area? >> i think when you talk about all the missions, really each mission is just a day. in that day they are only covering about 16 square miles of ocean floor. this is incredibly small bit of real estate considering where the uncertainty may lie is probably thousands of square miles. so although this is a good effort to try to find something quickly, it's really not likely to succeed just because of the uncertainty. >> how long do you give it before they walk away retriang late and go after it with fresh eye. >> they have been out there for quite a bit longer than that. so i think they are pretty much reaching the limit of their initial endurance and it's probably a good time to come back and take stock of all the information that we have and consider what is the best approach from here. this is sort of like a first r

the blue fin will be put back into the water today to seven again. police arrested 14-year-old dutch girl who created a firestorm on-line after she tweeted a terror threat to american airlines. she thought she was having harm lts fun when she wrote this. my name is ibraham i am from afghanistan, i am part of al qaeda and on june 1st i am going to do something really big, buy. she stopped laughing when the airline responded this way. we take these threats very seriously your ip address and details will be forwarded to security and the fbi. she wrote i am so sorry. i am scared now. i was joking and it was my friend not me. take her ip address, not mine. she does not face any charges yet. >> oo the city of boston waking up to a somber remembrance today. it marks the one year anniversary of the tragic marathon bombing. emotional contribute are planned as the tribute looks ban on the year of recovery. we are live from boston on more of what is planned for the day. >> it will be a very emotional day in boston. a day to remember the victims of tribute to ce

that helps the blue fin 21 search some 2.8 miles underneath the water.thorities have been concentrating on narrowing down that search field so far. but there have been no new pings since tuesday. we're wondering ifs if time. >> all right, we'll see you as soon as this press conference laps. for 38 days, families of the 239 people onboard have waited in agony. search crews are out again looking for any signs. all we have are four pings the most recent from five days ago, and we don't know for sure if those pings are linked to the flight 370. how effective is this search? joining me now to discuss is a 777 captain, mary schiavo, a former inspector general with the u.s. transportation department, david jordan, founder of natikos, a company that does deep ocean exploration. and jeffrey thomas in perth, australia. how do they calculate the search area each day? what factors are they taking into account? >> well, for the pings, they have to look at where the previous pings were and then they do parallel tracks to the previous sightings or soundings of pings. i

they could expand the search area gain as the blue fin sonar equipment nors the end of its mission. overed 95 percent of the current search area and found no trace of the wreckage. experts say the blue fin could finish in 1- 14 days depepping on depth and terrain. we remind everyone it is over the 30 day mark that the batteries inside of the boxes and beacons. they are going without sound and nothing beeping. >> and growing violence in a country dealing with national elections and a series of bombs campai . >> iraq, explosions, over and over at a huge rally for shite party in baghdad. some 10,000 people in the crowd. 30 of them killed and many of them injured. a terror group claimed responsibility for the attack. and a ustria, a building collapse. and witnesses heard a loud thud before the top two floors gave away. debris went flying and smoke filled the entire neighborhood. and china cracking down on soccer counterfeits, they destroyed 2,000 world cup trophies. they were seized along with fake jerseys. the world cup kicks off this june in brazil. jordan, painting for peace. 50 artis

that is a long way down and really at the very edge of the blue fin's capability. y find that they are the black boxes, the flight data recorders on this ocean's bed, it will be a painstaking process to find and recover them. >> what did he say about the search area, the fact that they've concentrated on southern part of this vast area they were searching? >> he said in terms of them refining the satellite information they had and upon further analysis they figure the plane could have gone a little farther on a little more fuel. they are concentrating on the search sector. the search zone itself is still quite large, but they have at least pinpointed their latest, most credible information of what happened to that night to that southern sector and so interesting that these acoustic pins are happening in one location but the chinese about 300 miles to the north is this other acoustic sound that the "ocean shield" is investigating right now. again, trying to pinpoint it here off the coast of western australia, given the amount of assets they have, about a dozen ships

to confirm any indication at all as to whether this is malaysia flight 3-70, they will deploy the blue fint need to be tethered, like the towed pinger locater does. it towed and tethered on a line. the auv, the blue fin 21, which looks like a torpedo, it will deploy on its own, it can rove around and it can go down to extraordinary depths. what it will do is pick up additional signals and it has camera capability, it can take images of the area where the pings were detected and it can scan the area of the bottom there. scan the entire area and go back and forth again and travel not just in a lawn mower pattern but travel in other patterns as well and send visual signals up to the ships on the surface as to whether there's wreckage or debris down there at all. >> okay, brian todd, many thanks to you to bring us the details on how that all works. very important part of this whole puzzle. and of course, you know, it's possible at this point that the submarines will be put in to motion as well. we know they are sitting on the sidelines. >> what i'm fascinated, rosemary, we have all these diffe

depths are very deep. >> reporter: nearly three miles deep representing the very same limit that the blue finan reach. and while the data on the black blocks can last for years, it's their locater becans that could have already died out. the hunt by pair remains critical as well. ships are scouring the indian ocean. but so far not a single piece of debris has been located. >> we have a good understanding of where the debris, if there is debris, will have gone to. we are currently very actively pursuing where we think that debris field might be. >> that task further concentrated by strong ocean currents, which could be shifting the debris. >>> now this morning i talked to joe rowlands. >> if the pinging has stopped it wouldn't be surprising since we're beyond the 30 days that the batteries were expected to last, but i do think that they will continue to pull the pinger locater through the water hoping to reestablish the connection. there are reasons that with weak batteries that they may come back, fade, and come back again. and also they have to be in the -- close enough area to pick it up as

do you think it's time to send down the blue fin? and if not, when should it go down? i think we heard yesterday that -- and we've been talking about it for the last couple of weeks. the pingers have a lifetime of 30 days. that's the specified lifetime. so you are required as a manufacturer to guarantee you'll get 30 days of operation. in reality, most people design a system that has what we call engineering margin. so there's more energy in those batteries. it's not outrageous for them to last 35, 36 days or even longer. you really need to narrow that search region. i think in a piece just a little while ago, you know, you were talking about the fact that sound propagates through the water column in a complex manner. just because you have 17 miles between pings doesn't mean that the pingers are in between those locations. it could be outside and propagating around, off the terrain and resulting in a much larger search area. >> tom fuentes, malaysia's transport minister said that everyone on board the missing flight remains a suspect. but nearly two weeks ago, they cle

. >> david, so in addition to the towed pinger locater, the ship right now has the blue fin, the autonomousderwater vehicle right there. tell me when that would become useful. >> well, in some ways, in the traditional way of thinking you'd wait until you heard -- picked up the pinger locater, then deploy that. but i'm thinking if we have faith in that area, as big as it is, it can't really hurt anything to get that vehicle in the water, get some operational expertise in that area, see what you see, and start crossing areas off where the plane isn't. and i think that's important information now. so i think it can be valuable. but you don't want to burn out the teams, either. they want to be pretty judicious. the one thing i have to say is that once this gets going full speed, both vehicles in the water, we need to leave that team alone. because they're going to be plenty busy and they can't second guess what they're doing. >> they need to do their jobs without interference. interesting what you say about the blue fin. up until this point we've been told that it will probably just be used onc