"out front." thank you so much for joining us, "ac360" starts right now. good evening, everyone, 8:00 p.m. here in the united states, 8:00 a.m. where there is breaking news. authorities are out with a new plan of attack for the day. we have a big night ahead including a preview of one of the most rewarding hours of television we've ever done. one of the bravest, this is called "the surviving diaries." first, breaking news tonight, 24/7 all-out race to find flight 370's black boxes before they stop sending out signals that will lead salvage crews to them. the search has been narrowed, but the time window is closing. matthew chance is outside perth with the latest. tell us about the search, what do you know? >> yeah, every day they seem to be refining the search area, and

have skimmed off of it, narrowed it down by 29,000 square miles instead of the 30,000 it was yesterday. it is still a vast area of ocean. but the two areas of focus still one in the south where the chinese, you remember they say they found some pings. they have not verified that but they're still working on it. another area in the north of the zone where the shield, the australian vessel is using equipment borrowed from the u.s. navy which has tracked what they believe are pings from the black boxes but still have not managed to capture them over the weekend. they're still working on it but as yet they have not managed to get the signal back, and they're very worried about it. >> you talk about ocean shield, do we know how many planes or ships are participating in today's search? >> yeah, it is 15 planes, not just the two vessels, it is 15 airplanes, most of them civilian, but military, as well.

14 naval vessels out there in various locations in the search. all playing a distinct role, looking for debris and looking for other signs. a nuclear submarine is there, as well. all scanning for signs of the nuclear sub. so far after what? 33 days now they still haven't got any verified information of where the missing plane is. >> matthew chance, thank you, i want to bring in miles o'brien, david gallow, co-leader of the search and aviation correspondent richard quest, richard what do you make of this area? >> they know where they have to be looking. they have already had the satellite data from inmarsat. that has already been refined down. so it is a constant process of elimination. you just keep going out there

looking for any debris that they can find. they need corroboration. they have the circumstantial evidence of the satellite pings and the ping noise. but they need corroborate bing evidence. >> two things going on here, the planes are looking for debris on the map. and then the pinger in the ocean shield is still trawling up and down for five or ten days until they're absolutely certain the batteries are dead. but the planes are in the air looking for the corroborative evidence that it exists. >> and miles, when we look at the map, it is kind of a confusing map, all the gray areas, the search areas, the red you see in the middle of the gray area that is one of the new search areas. and there is a tiny little red dot at the end of the 1,038 mile

area, i guess that is the planned search area where the ships are. the ocean shield, they're actually adding more assets to the under water area -- adding a british ship. >> the hms echo, and of course the chinese ship that reported the oppositions over the weekend. and in the same southerly location, also the same inmarsat also makes sense. and while those pings were picked up by a device the chinese were using, it is nonetheless something that you want to check out. and so they are scanning in that location. haven't heard anything from that location yet. i'm told by the experts that it -- it is a separate thing regardless. if they heard pings there it is probably not the same point of originatation as the location where the ocean shield is. >> david, at this point, do you think they're going to be at this for sometime since they have not heard these pings again

since sunday? >> yeah, i agree with what richard said, anderson, is that they will keep going until they're fairly sure the batteries are worn down into nothing. because if they get one or two more good hits it will be time to put everything in the water and start searching the sea floor. >> yeah, i want to bring in mark matthews, a u.s. navy captain from australia. he has been obviously on the hunt and knows firsthand the ins and outs. i appreciate you joining us. can you just give us an update on what you expect today, the details of the search, how is it going? >> certainly, anderson, my pleasure to be with you today. what we expect the teams to continue doing is the search with the towed pinger locater, this is really my long-range

detection locater, but it is the best means to do the locater beacon with the live batteries. >> do you believe they are live -- do you actually know if they are, or just kind of hoping that they are at this point? >> well, those batteries are rated for a 30-day life. and you know, that is the minimum they're designed for. so today is day 33. i fully expect that there is a strong probability that they're still active. but you know, there are certainly variables at play here. if you look at the air france flight 447 accident, those pingers were not working due to damage they sustained during the impact. but you know based on the detection that we picked up over the weekend i would believe that those pingers are still active. >> and obviously, you want to give every chance possible to hear any pings that are still

going. do you have a time line for how long you -- you keep trying to find the pings without actually sort of switching to just searching the ocean floor? >> certainly, and this is -- relatively a hunch, right. so 30 days is the minimum life you expect out of these batteries. i would say that 45 is probably the maximum you could expect. so sometime around that 45-day point, people will need to sit down and we'll need to have the discussion of whether or not it is time if we have not localized the acoustic transmissions that we received over the weekend. if these don't turn out to be realistic detections, it is time to sit down and say the towed pinger is no longer effective. it is time to shift to a system that is much more time-consuming.

with the ocean shield on board right now it would take me six or seven days to search the area i can cover in one day with the towed pinger locater. so right now our efforts are focused on maximizing the towed pinger locater, and the next would be to go with the sonar once we're confident that the pinger locaters are no longer working. >> just briefly, if you never hear the pinger again, from the data that you have already gotten from the two that you have received how big a search area on the ocean floor is involved? >> i think it is important to take even a step back further from what you are just asking. because really, what we're doing is the last known location of this aircraft was thousands of kilometers away. and what we have is information from a multi-national team up at kuala lumpur, who have done some

really astounding engineer work and astounding data reduction, if in fact the location they pointed us to is the accurate location. it is certainly promising having detections in the water. i need more confidence to say it is an acoustic beacon. i need to regularly re-acquire that signal so that i can accurately put the auv down on it. that would be astounding. now, if i just search around the areas that we have had the periodic detection of the beacons, you are probably talking to get a good coverage in that area you're probably talking around 30 kilometers by ten kilometers. still a big area, but you know certainly a lot smaller than the broad area search. but you know, there is a possibility that our acoustic

detections are not accurate. and so we need to you know, maintain respectful optimism and be responsible with the actions we take. because we certainly do not want to project false hope until we can confirm that our detections are good. >> let me just follow up on that. if -- and again, there is probably an obvious answer to this and just as a layman i don't understand it. is there a disadvantage to trying to tackle this on multiple fronts? at the same time, did you have the towed pinger locaters up there until day five, what other assets do you have scouring the ocean floor, in a way that you have been able to triangulate, and having under water vehicles would that interfere with having the towed pinger locater in the

water? >> when i'm launching it from the same platform it certainly would. the best use of resources right now again is to focus on that broad area search, that towed pinger locater until we could reasonably rule out that the tra transister locaters are failing. >> do you find is it tougher as time goes by without hearing another ping? >> i think we lost you just on the sound, obviously. it is a live transmission from australia, captain matthews, i appreciate you being on. let's go back to the panel. i mean, david gallow, you have been out searching for 447. is it hard to maintain that optimism and is it necessary to maintain that optimism? >> yeah, i think it is necessary to maintain the optimism on board a ship for sure where the teams are going 24/7 without a

break. you know, rotating shifts of course. but i'm going to jump ahead a little bit and say they have a lot going for them right here with having heard that pinger for so long. and understanding how far away from that pinger could they still have heard that kind of decible. and i don't know what they have received. captain said 30 by ten kilometers. that is a respectable area. a good size, you know, it is large but not too large to search in about a week's time. so that is a very good team out there. they have great technology. he knows what plan he is working by. there is a lot of confidence in what he is doing. >> does it make sense, david gallow, you said it would take about a week to search the area. i'm assuming you would talk about under water vehicles. why not just do that now rather than wait another 15 days for a pinger -- >> i'm always very anxious to get the vehicles in the water.

matthew is being a little bit conservative, but rightfully so. it is fairly rugged terrain, you take the risk of losing the vehicle or damaging the vehicle and also you have got to change ships on board the ships. so it is not a trivial thing to change just from the towed pinger locater to this auv under water drone. he is doing the right thing, i would be chomping at the bit to get the vehicle in the water and start facing that northern slope. >> all right, lots of questions, let us know what you think. using the hash tag "ac360." and where this ship sank that you're looking at you will see how they found it and how similar methods could help them find the plane. and up next, how this towed pinger locater actually works. also tonight you will meet an extraordinary woman, adrienne

haslet davis, how she lost her leg in the marathon bombings, and her long road back. >> they are going to fit me for my leg. yes! so exciting. here is the foot -- >> does it hurt? >> no, she is standing on her own. >> she has allowed us to follow her recovery. we're going to bring you the story tonight at 10:00 eastern, she will join us in this hour with the preview. aflac. ♪ aflac, aflac, aflac! ♪ [ both sigh ] ♪ ugh! ♪ you told me he was good, dude. yeah he stinks at golf. but he was great at getting my claim paid fast. how fast? mine got paid in 4 days.

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you heard can't matthews say earlier as long as there is hope that the black box pingers are still picking, they are paying attention to the special locaters. >> reporter: this high-tech listening device can glide along near the bottom of the sea at about a thousand feet from the ocean floor. it is a u.s. navy hydrophone or under water microphone called a towed pinger locater, search teams are counting on it to find the pings located directly on the black box. but time is running out for the pinger's battery life. >> what they're trying to do is get ears in the water while the pinger is still going. >> reporter: this is the sound they're listening for. this is 30 inches long and weighs just 70 pounds. it is towed behind the ships that operate it, in this case, the ocean shield and generally

moves at about three knots. that means with about three miles to cover it will take days. >> it does two things. it gets it down into that level. it also gets it away from a lot of the surface noise, all of the whales, dolphins, fish, they all make sounds. >> the device can pick up a sound from as far as two miles away. here is why it is so critical to get that towed pinger locater deep down in the ocean. the pinger sound from the black box can get stuck in something called a deep sound channel. about 2,000 to 4,000 feet below the surface. if the sound does get trapped there and bounces around the only way to pick it up may be through one of these towed pinger locaters. >> seeing the device down there, that will put you in that channel so they can hear the

pinger sound, or ricochet sound. the realtime, the scientists and technicians on the boat will be listening. >> pinger locaters have been used for years. in 1996, a tpl successfully located the black box for twa flight 100, in shallow waters off new york. investigators used one in 2009 when air france flight 447 went down in the atlantic but found nothing. if they have any luck locating the pinger from flight 370, next they will deploy this autonomous under water vehicle that maps the ocean floor. >> it will start to run patterns back and forth, shooting sound out the side and taking pictures. and it will show objects, shiny objects, basically, bright objects that could be the plane. >> right now that is the perfect scenario. but even the head of this search effort seems to be hedging his bets. >> hopefully, hopefully the

calculations are putting us into about the right area. >> randy kay, cnn, new york. want to bring back david ga gallow, we're joined by david succi, it is kind of remarkable that they heard these pings for an extended period of time on sunday. and yet there is no debris in sight. >> i'm still confused by that. a couple of theories that are going around in my head is one that it was able to make a successful ditching and that it all sunk together in one piece. >> that it actually landed intact. >> yeah, that would explain where there is no debris. and there was a lot of movement. also the columbia university guy, saying if there is debris it spreads out. you would think it would be easier to found. you saw before they found little tiny pieces of paper and things

like that from the sightings. >> david gallow, does it make sense to you that no debris has been found? >> when you get out there it is a big ocean and objects become very, very small. even ships and planes. and you know, i do wonder if the modelers have been looking at this location and forward casting from here to where those objects would have ended up if they originated where the ocean shield is today. that would give you an idea of where the debris field is. >> david gallo, you raised a good point. i spent this past week in the pacific diving on wrecks of world war ii planes on a story i'm working on for "60 minutes" on a story completely unrelated to this. once you're out there it changes your perspectivrspective. once you're out on the ocean you realize how huge it is and how

difficult it is to find anything out there. >> yeah, absolutely. and the idea there is mountains, valleys, the greatest mountains, under water rivers, lakes, the largest water fall on earth k e underneath the sea. and the public is generally not aware of these things. when you're out there and the experience you just had it is a whole different world. >> and david souci, i have also heard the different time periods for the grace period for when these pingers may extend to t. i just heard from captain matthews saying the minimum, they may give it 40 days before they give up on the hope of hearing the ping. >> with anything that is type certificate held, it has an authorization, the manufacturer. it has a 30-day limit, you have to exceed that by a certain amount. that is what they're talking about here.

typical typically you have -- well, not typically. have you to simplify dcertify 3 >> do you think they just got lucky, they have been refining the search area over and over. all of a sudden this weekend they got pings. >> it is funny, even golfers say the harder you work the luckier you get. these guys are working really hard and covering a lot of territory. and i think that is what the result is. they really narrowed it down. >> david souci, and david gallo, up next, we'll take you to an aviation expert lab in california. you're looking at it wriright n. this is a fascinating case, you will see how investigators get information from even the smallest pieces of wreckage. >> also we'll learn more on a ship that sank in years past, where flight 370 may be. it was different than the other times i tried to quit.

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well, searchers say the signals detected in the indian ocean are the best hope for finding wreckage of flight 370. now if pieces are found, it is only the beginning. stephanie elam has more based on what they see. she is an expert at the aviation lab, stephanie? >> yeah, anderson, when you take a look at this wreckage it really does help put into perspective just how mangled these planes are and how they're able to take little pieces of that and decide then that this is what happened with this plane. they say once you learned something, when you look at the

next accident you can learn from that, as well. and just to show you, i want to introduce you to michael bar. he says when you look at this, with an untrained eye and look at an accident like this to me i can't tell what happened here, but to you there are clues already. >> as soon as you start to walk across the field and start to look at the airplane, the airplanes are going to talk to us. telling me the angle of impact, telling me whether or not they had an in-flight fire, tells me whether or not they had a ground fire. that is where i start. then what i do is take each system and i look at each system until i find out which system was the problem. >> okay, and this is a big part of the plane that was here. and obviously, this one was a crash landing on earth. but when you take a look at the 777 that they're looking for, if it went into the water if that impact happened could we get something from that, even big pieces, as to how it could potentially break up? >> if i have the wreckage, then

i would go back to what i did before we started investigating with black boxes and do deductive reasoning. >> anderson it is a slow, painstaking process if you don't find the black boxes to go through and find small pieces. but any pieces found would give them that clue if a, it went into the water and b, what happened to it. >> if you could ask mr. bar, just with an aircraft that is under water, how much of the actual aircraft would he want to actually try to bring up? or would he just be focusing at least initially on the black boxes and not worry too much about the actual aircraft pieces? >> well, i would do both. but initially i would want to see the black box because that would be the easiest way to find out what was happening. but if i couldn't, i would also be looking for the wreckage itself. because as much as i can get back, i would put it together like this twa 800. and when i get done with it,

that mosaic that i see will actually give me a picture of what happened to this airplane. and good investigators, sharp people, 90% of the time will put it back together and come up with an answer. >> it is amazing what you can do. i appreciate it, and now, miles o'brien and aviation correspondent, richard quest. it has to be frustrating that the lack of debris at this point, which would give a lot of clues about how this plane entered the water if in fact that is what happened. >> yeah, if guess if i had to choose between the two i will take the black boxes. because there is an awful lot of data in there that will tell us things that certainly could rule out or rule in mechanical failure, an explosion. there is a lot of scenarios that we could run through. you know, the interesting thing is though if you think about this as a deliberate act, black box is not going to really tell us who might have done that, is it? so there might still be some mysteries that it does not

answer. >> and he is saying that, richard, because obviously it only records a certain amount of time in the first two hours. >> that is the cockpit voice recorder. the cvr records the last two hours. the flight data recorder records weeks. and that has every input. whatever is done in the control room. 10,000 parameters are monitored from engines -- >> from that will you be able to tell if the aircraft was under human control? >> oh, absolutely, because you will see the measures that were taken and it will tell you which side did it. was it the left-hand seat or the right-hand seat. it will not tell you whose hand did it. but you will get such a vast amount of -- just listening to what they're talking about with wreckage, if i looked back at the incidents i have covered, concord, qantas, twa, in all of those incidents huge amounts of information was gleaned by looking at the wreckage and

working out what bit failed in what order and to which consequences. >> but have you ever covered a crash in which there was no debris, in which a plane -- in terms of a plane in water, that it entered the water whole? >> you mean sort of like a movie? it goes down intact? >> yeah, or it had a relatively gentle entering into the water. >> well, some second world war ii planes went down and bombers went down intact, but they were at slower speeds, in terms of a jetliner, much faster, no, a more complicated case. >> it is completely backwards, i would expect to find a seat cushion, and oceanographers would go back and try to reconstruct where the crash site

might be. in this case we had so little information. and almost because of that it forced the clever engineers at inmarsat to come up with the rings, which gave us in a rather amazing way the ability to define locations on the planet where that plane was. and sure enough underneath that last ring we're hearing some pings, apparently. >> miles, we heard from captain matthews early on in the broadcast at the top of the program talking about giving you know as many as another 15 days or probably 13 days now, sort of a maximum of 45 days on the life of the pinger to continue to search for that sound. do you really think they will go that long to searching for the sound? >> that seems like a long time to me. listening to van talk about the 7-1 ratio as far as the pinger versus the autonomous under water vehicles. in other words, it would take seven days to cover the same amount you could cover in one day with the pinger.

given the amount of time, that seems a little excessive. there will be pressure from the families, the media to put the autonomous under water vehicle in the water and start to map the ocean. you heard david gallo, he wants it in right now. >> well, miles, appreciate you being on. richard quest, and just ahead, this is fascinating. it took experts decades to find what you're looking at right now. this is a ship from world war ii in very deep water. two decades to find it. you will see how they did it and what lessons may have been learned from this search. plus, just days after losing her lower leg, adrienne haslet vowed to dance again, i foolishly asked her to give me a dance lesson and she took me up on that. we had our dance lesson, we'll talk about the journey on the dance floor. she joins us ahead tonight in this preview. >> totally got it. gunderman group.

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well, the breaking news tonight, the search for flight 370 now being refined again in the race to find the black

boxes, 15 aircraft, 14 ships are joining the hunt in the coming days. three of the ships searching, without question, the southern indian ocean is probably the worst place for a plane to crash, deep, rough waters, hard to reach by ship or plane. this is not the first time an extended search has taken place off the australian coast. cnn asked the man who recovered a ship if he sees parallels with the search under way. >> reporter: these are the first images of the hmas sidney, more than 60 years after sinking in battle with all 645 on board lost at sea. this was taken in 2008 off the coast of western australia. the same waters malaysia airlines flight 370 is believed to have gone down. >> the sadness on board to see those images will be met again if this occurs in that case.

>> michael mccarthy was on the team that found the sidney, after more than 25 years of searching. he sees eerie similarities in the search for flight 370. >> you have an enormous area where it could be or may not be. you have the similar depth of water. you have similar emotions. >> but the search today has the advantage of technology. if satellite images and search planes can find debris from the plane in time, the flight data recorder should be sending out a signal. but the search for hmas sidney shows that even without that signal wrecks can still be found using sonar scans. it just takes time. mccarthy describes the process. >> that just mows the lawn back and forward until you finally find a signal which tells you there, we have our rig. and that takes a while even if you know where you're going to go. >> by salvaging the sidney,

mccarthy and his team were able to pinpoint exactly what happened when it sank. and they hope to be able to do that with flight 370. but solving the mystery is only part of the search. >> it was not what happened. not only so much whose idea was right or wrong, but whether the relatives got a sense of closure, to use a terrible word because it is not really closure, is it? but they had a sense of one less mystery to them. >> this deep water mystery now solved gives hope to those still seeking answers to flight 370. cnn, australia. >> david gallo joins us again, director of special projects, he co-led the search for air france flight 447. it is important to bear in mind. we talk about finding the plane, the wreckage. this is a burial site. this is a horrible, horrible loss of life, i mean, you think

about more than 600 souls on board that ship from world war ii who went down with the ship. and here, you know, 239 souls. i just think in all the coverage it is kind of easy to lose sight of that essential fact. >> yeah, i'm glad you said that, anderson, because otherwise it becomes an interesting mystery of what happened to malaysia air flight 370. same with the world war ii submarine lost in the aleutians. you work hard to recover, and in one sense you want to celebrate, but in another sense there is no time for celebration. even on the titanic, there were moments on the ship where emotions just overcame you when you think about what happened with that ship. >> i have a great uncle, who was

lost. and same scenario, so many souls lost on board, and disappeared forever. you hear it described as like mowing the lawn, kind of essentially going back and forth. that has to sound familiar to you. >> of course it does. yeah, i mean, that is the normal way to look for something when you have a very wide area, a big search like air france 447. in the early days it was titanic and many other ship wrecks, in this case it could be something different if you forget that mega sized ship. and focus on what the pingers tell us. if those are true, you heard the captain talk about 30 x what was it -- 30 x 10 kilometers. that is about 100 square miles, something like that. that is a very manageable area where you don't have to maybe mow the lawn you may be able to go directly to the target if you believe what the pingers tell you. so it might be a little bit different in this case. >> yeah, well, let's hope.

david gallo, up next, we'll talk to the marathon boston bombing survivor, adrienne haslet, she told me moments after the bombing she would dance again. she documented her journey, every step of the way including some of the toughest moments. >> i'm at the studio. and -- just tried dancing again. determination is going to get me through. but -- crap, it is hard. ben! ♪ [ train whistle blows ] oh, that was close. you ain't lying. [ ql guy ] let quicken loans help you save your money. anybody have occasional constipation, diarrhea, gas, bloating? one phillips' colon health probiotic cap each day helps defend against these digestive issues with three types of good bacteria. i should probably take this. live the regular life. phillips'.

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today, the white house said vice president joe biden will attend a memory tribute in honor of the first anniversary of the marathon bombings, people touched have not had a road map on how to get through these months, for everybody it has been different. more than 200 people were wounded. amputations were far too common on that day. adrienne haslet davis, a professional dancer, lost part of her leg, she promised she would dance again after the bombing. she promised to teach me, because i foolishly asked her, she is incredibly inspiring and generous. for the past year adrienne has allowed us to follow her recovery. she took a lot of the video herself, and documented her trials and also her struggles to overcome the physical and emotional wounds. at 10:00 p.m. eastern time, a little over an hour from now,

we'll bring you the special report. >> part of my ptsd was always thinking a bomb would go off at all times. they lit fireworks over the harbor. and all of a sudden, we heard explosions and i started screaming and crying, call 911. >> well, adrienne haslet davis joins me now. and you know, one of the things we see in that moment it just the reality of recovery, the reality of this. in tv, we're there for a couple of days, couple of weeks at times. and then we leave, and you are left with this new life. and it is -- i just think it is incredibly brave of you to document this and show it to the world. because -- is it important for you that people know the reality

of recovery? >> yeah, it really is. you know, like you said, you know, you can cover news stories and people can have that moment of grieving with you. but then it is easy to move on to the next thing and sort of, for lack of a better term forget what happened to the people who have really suffered. and it is important for me to show that and to show other amputees. i just heard -- giant an e-mail from somebody just hours ago saying that their dear friend had a 13-year-old daughter, and she was just severely amputated in an accident. i need to get more details. but it is just things like that, that make me so sad for them. i want them to have a reference of what that year will look like. >> did you have any idea what this year would look like when we first talked in the hospital? >> not at all. i thought i would get my prosthetic and start dancing again, and two months, three months, a far cry from the truth. >> explain why -- how it was more difficult.

explain why that didn't happen. >> you know, i -- was wrongly assuming that the prosthetic, you got it. and just put it on the end of your leg and you just started walking. and it is much different than that. you have to wait for your stitches to wound, scab over, and then you start to put on this shrinker sock and wear that to shrink down your leg. >> and your leg it does shrink? >> yes, my gosh, it was the size of a basketball when we met. now it is just as small, if not smaller than my fist. that takes a lot of time. you go through a significant amount of legs before you're comfortable to put appreciate on it, and do dance steps. >> when you do dance again, and you were very gracious to give me a dance lesson. >> so much fun highlight of the year. >> i don't know about that. you are being very gracious. but you also recorded really -- i think the first time you were dancing at the m. i. t. lab, you

worked there with the specialists there, is it michael -- >> he really developed a foot for you to dance on? >> yes, he is incredibly talented, and his team is incredibly talented. he said are you ready to give it a shot? i said let's do it. >> ready? >> yeah. >> okay. ♪ ♪ ♪ >> what did it feel like to start doing that? >> it was incredible. you know, you can feel the articulation through your leg. i could feel the articulation through my foot. and that was the first time in

those experimental phases with that leg was the first time i could feel my foot moving for the first time again, and just to visualize something on the end of my leg was incredibly emotional. >> and you were hooked up to a computer. there were scientists there watching you do this. and you were saying oh, it feels a little tight here. also in that video there is a big battery pack on the prosthetic. which over time in this able to shrink down. and so later on in the film tonight, when you dance at the first public dancing, they have already made progress on just the size of it. >> they did, and you know when they integrated the battery into the leg it made a difference on the weight distribution for me. and that helped me to be able to dance a lot better than i'm dancing here. and it was just incredible. they just make all of these improvements. and it was a joint effort of me

saying this is what i need, and them saying this is what i can do. >> and i also want to mention your husband, adam, who has gone through all of this with you, he was wounded in the blast, as well. what do you want people to take away from this, that are watching this, as well? >> you know, i think it is an honest look to know what it is going through hell and back. i want people to take away it is okay to not be okay. when you have dark moments, maybe not this specifically, when you have these dark moments in life you have to let yourself not grieve. and force yourself to be okay. and for our amputees, i want them to realize they're not alone. you can feel like the only person in the world that was affected in that moment. and that your life may not go on. but if you find the strength to keep going and know that you -- it is okay to not be okay. >> i like that, that it is okay to not be okay. >> yeah, my grandmother said

that to me when i was very little. i was upset about something, probably not very important at the time. she said it is okay not to be okay. that really stuck with me, as well. >> and for me, as well, i'm so proud to know you. >> i'm proud of your dancing. >> we'll see tonight. >> everyone will see tonight. >> yeah, sadly everyone will see tonight. it has been a remarkable year for the survivors, "survivor diaries" will begin tonight at 10:00. we'll be back live for another edition of "ac360." we'll be right back. we've never sold a house before. (agent) i'll walk you guys through every step. (dad) so if we sell, do you think we can swing it? (agent) i have the numbers right here and based on the comps that i've found, the timing is perfect. ...there's a lot of buyers for a house like yours. (dad) that's good to know. (mom) i'm so excited.

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and not a victim. >> you were determined to

hey, i hope you tune in for our documentary "the survivor diaries," we'll be live with another edition of "ac360," and make sure you never miss an episode. "the lead" with jake tapper starts now. tonight, the desperate race to keep the search for flight 370 from running cold. i'm jake tapper. this is "the lead." the world lead. the eureka of discovering signals from under water has kept optimism afloat in the 24/7 search for the missing plane. but now, silence, the searchers are lucky the pingers have not died. but