>> yeah. thank you for your advice, too, on fatherhood. >> that was given in the commercial break. >> we appreciate it. thank you. >> thank you. >> that's it for the lead. i'm jake tapper. we will see you at 4:00 and 9:00 p.m. eastern. cnn special report starts right now. this is cnn special report. i'm don lemon. breaking news tonight. the search area for flight 370 has narrowed is significantly tonight after more pings were picked up by the australian ship ocean shield yesterday. 13 ships and 14 planes are out there right now. crisscrossing and area that is 7,000 square miles smaller than yesterday. the search is still going on with the ship's nonessential equipment turned off to minimize the noise. as the search goes on, there's still more questions than

answers. you have been tweeting us your questions by the thousands. we have top aviation and security experts standing by to answer them. like this one from debbie -- if they find the black boxes, how long they find out what happened? right now, i want to go to cnn's reporters in the search zone. michael holmes is in perth. joe jones is in kuala lumpur and richard quest is with me in the studio. michael, just when it looked like the trail was going cold, the search of flight 370's new signals are heard yesterday. what's the latest on today's search? >>. >> the planes haven't headed out yet but they will be. there will be more than a dozen planes and ships out continuing to search for that elusive jet. as you said, we had two more pings on tuesday. that, in addition to the two that we had on saturday.

what thauz that does is it helps those out there searching, who are dragging that ping locater on loan from the u.s. navy. they are trying to get more pings today. what that will do is help them triening a late, if you like -- think of it looking for a cell phone tower and the pings of the towers, it helps to work out where the best spot to search for those flight data recorders are. of course it's a very difficult task. it's a vast area. on the bottom of the ocean floor, by all accounts, there's perhaps meters of silt. so it depends how these things, if they are there, hit the ground, hit the ocean floor, and maybe they are buried in silt which will make finding them even more difficult. that's the aim today. what we heard from the man who's heading up the search effort here, he says he was optimistic they would find the wreckage because of what data they have received so far. that coming from a man not prone

to exaggeration or raising false hopes. he's a very mild-mannered gentleman. if he says he's optimistic, than that really is a good sign. don? >> we have been paying close attention the. it appears they are a little late. they are usually up by now. >> yeah, michael what's going on? the first flights are normally left by now. it is 10:00 a.m. any reason why they might be a bit later today? >> you are right. most days they have taken off by now. today they have not but it's not the first time they have been this late. there can be complications of weather. it is a beautiful day here in perth today. it's going up to the 80s fahrenheit, high 20s celsius. the search is happening a couple thousand kilometers off shore and the tiniest variation in the weather out there can keep the planes down for an hour or two. so they haven't taken off yet but that is not unheard of. they have usually gone by now but not always. >> thank you, michael holmes.

we appreciate that. joe, it's been an agonizing month for the families. how are they reacting to the news of the new signals? >> don, we talked so much in the last several days about the emotional limbo these families are going through, the not knowing compelling them to not say too much in most cases until they get some firm evidence that this plane has, in fact, crashed. there's also the financial limbo many of these families are in. what i mean is there are bank accounts, wills, trusts and estates all of which cannot be dealt with until a death determination is made. there are also dependents who need financial support from individuals who were on that plane. all of these pieces of the puzzle cannot be resolved until a determination of death has been made or authorities otherwise tell these families what has happened to their family members who were on that

plane. a very difficult situation for people here in malaysia. also for people in china and many of them are sitting and waiting. don? >> thank you very much. i want to bring in now mike dean. he's the deputy director of salvage and diving for the u.s. naechl and jeffrey thomas is the editor and chief of airline ratings.com. thank you to you gentlemen for joining us. the head of the search angus houston is predicting they will find the plane or wreckage soon. are you as optimistic? what are you hearing from your sources there? >> look, absolutely, don. i'm very optimistic. both on the record with angus houston, a man not known for being enthusiastic, he's enthusiastic, but also off the record very positive feedback. there are actually two search areas, don. we have where the ocean shield is. that's a small search area that. ship is there by itself with the pinger locater.

then 500 miles to the west of that we have about 14 ships. that's where the aircraft are going, as well because they are looking for debris. that debris is 500 nautical miles away. because a tropical cyclone a hurricane, if you like, went through 2 and a half weeks ago and i think it has taken the debris to the side. >> with two new sets of pings from the indian ocean, the search for flight 370 has shrunk to a patch of a water about the size of south carolina. how much more manageable is the search area now do you believe, mike? >> it's too large to move to the next phase of the search which would be autonomous vehicle. ideally, we want to try to reacquire the signal and shrink it down more. remember the auvs can cover about 20 miles a day on a side scan sonar search. so we have to get that number down a little more.

certainly this is good news. we're optimistic we acquired a signal somewhat, but having done this for a while, we never believe we found anything until we have put a camera on it and see it for sure. >> i want everyone to stand by. jeffrey, mike and richard, i want you to listen to this the. we will go to cnn's tom formman for a look at the placement of the pings. >> it is interesting to look at precisely how they collected the pings out here. there's the arch the satellite designed. along that arc is the path followed by the ocean shield, the ship that collected these four different pings out. there how do they do this? it looks like a nest. what they were really doing and trying to do more of now is establish order on the ocean. they do this by going back and forth over the target area and get as many hits as possible and then going in a perpendicular fashion to get as many more as

they can and look for the strongest ones in both directions hoping they will coincide to make a smaller box, a smaller search area. allowing them to crush this down to an area that's much more efficiently and capably searched underwater where the job is that much tougher and that much more time-consuming. >> thank you very much. >> richard, you think this is a significant development. >> absolutely no question. it is of huge significance. to have had two ping s and then to double that with another two, you are bringing the search area ever smaller. you are getting a better handle on where you need to be. the worrying part in this is what houston said last night. the signals that they had yesterday, the the signal is getting weaker, the batteries are dying. he believes. >> that's an indication that probably, in their estimation is

370 but the bad thing the signal is getting weak every and the batteries are dieing. >> the batteries are dying and so time is against them. houston said there's no second chance. that's what tom foreman was talking about. they are going to go up and down, mowing the sea, mowing the ocean before they think of putting the vehicles in the water until they can be absolutely certain that there's no more life left. >> how long do you think they will continue with the towed pinger locater knowing the battery life is roughly 30 days and almost over. >> there is abontidotal data th we have seen them last longer. i would expect them to continue a few more days until they have hit 35, 38 days and likely not had a signal in 48 hours before they discontinue the tpl. that's the urgency. you don't want to discontinue

tpl operations too early and switch over only to go down and not find anything with the auv. >> thank you very much. you will be back with us later on. jeffrey thomas, richard quest, stay with me. when we come back, more than a month since flight 370 vanished. we still have not found a single piece of debris. does that tell us something important of how the plane might have hit the water? mine was earned in korea in 1953. afghanistan, in 2009. orbiting the moon in 1971. [ male announcer ] once it's earned, usaa auto insurance is often handed down from generation to generation. because it offers a superior level of protection. and because usaa's commitment to serve current and former military members and their families is without equal. begin your legacy. get an auto insurance quote. usaa. we know what it means to serve.

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welcome back. the search narrows significantly tonight. are we closer than ever before to finding the plane? i want to bring in my team of experts. the former inspector of transportation. michael kay, a former adviser to the u.k. minister of defense and david souci, author of "why planes crash" tim tillman, and editor and chief of airline ratings.com. michael, we are up to four signals sense saturday all within 17 miles of each other. how confident are you that this is flight 370? >> the first priority here and the first priority from the outset has been to locate the final resting place of flight

370. there's a usual process we have been used to in the past of doing that. usually it involves identifying surface debris and getting down on the ocean bed. >> how confident are you that this is 370? >> i still think that we have a few facts that we need to get our heads around. but in the absence of anything else, i'm confident the data and what ocean shield has picked up so far is going to lead us to the location. >> thank you for that. david, authorities have analyzed the signals from saturday and concluded they need more from electronic equipment. so, let's take a look at this tweet. it says we hear it might stimulate pings but how often do false positives occur if previous searches get them? >> none. there have been frequencies picked up but never one-second pulse like these are doing. that's what is so distinctive

about it. commercial fishing boats use some in that same frequency to look for fish but they are talking about multiple pings per second. this is a one-second ping and that's what we have here, a one-second ping. we haven't picked up anything, as far as i'm aware as far as false positives that have that distinctive one-second sgling no false positives in anything that you can remember. that's interesting. mary, the initial signal pick ed up on saturday lasted 2 hours and 20 minutes them two most recent pings lasted 5 1/2 and 7 minutes. the signals appear to be weakening. how bad is that for searchers? >> well, it's bad for searchers because we still have a lot of area to search. by the time you calculate that 17-mile swath in to mowing the ocean floor, it's a long, long spell or it can be unless they get lucky and happen to be right on top of it. once the battery die thes they are left with that 36-square

mile path on the ocean floor to search back and forth, mow the ocean floor with the immersibles and side scan sonars. if the batteries die it is unfortunate because we are looking at weeks or months of constant searching. >> even with the smaller search area, right? >> even with the smaller search area. with the larger search area, i don't like to be not optimist ic but with the larger search area without the pings it would be impossible. impossible put down the sonar until they narrowed it down to what we got. >> hold on a minute because i have a question for martin savidge. martin, searches have possibly detected the black box. that's possibly. but still no debris has been found. could that mean the plane landed in one piece and broke apart as it sunk? >> it's possible. until we find the black boxes and the aircraft itself a lot of

things will be possible. what we want to do -- last time we showed you a demonstration of what it would be like to land on water without power. in other words the engines quit because they ran out of future. but mitchell casado brought up a good point that you were the pilot you wouldn't wait until you were out of fuel. >> no way. >> that way you have a second chance. take us down and get us really close. we will make this approach and show you what a water landing can look like. we will warn you we will not go in to the water. simulator couldn't possibly take that. but we will bring you in and mitchell will tell us what the approach would be like. what would you be doing and what watching and waiting for? >> martin, for water landing, you want to keep the plane in a similar altitude as a regular landing. level wings, you want to touch down tail low. you are going to bounce. that's pretty much a certainty. you want to have the hatch open to escape.

the crew would be prepared in the back and about 15 degrees of flap, which is optimum but not full because that's too much drag. >> you keep the power going because you would like a second shot or maneuver if there's a problem. we're now 30 feet above the water surface. we're right about stall speed. can you show us the attitude outside of the aircraft? this is the critical thing to look at here. we can bring it up because it is a simulator. look at the aircraft as it would be over the water. this is the miracle on the hudson profile that you want to have. this plane far bigger than the one that occurred that day. tail first, you hope there aren't big waves and you set it down gently. you are going to bounce. there's no guarantee but it is possible and the other thing to point out it was daylight, assuming seven hours had gone by, in theory, yes, you could set it down intact. it could sink after that. but nobody knows for sure.

>> you and mitchell said you were going to bounce. doesn't that offer the possibility if you bounce there's going to be some breakup in waters that volatile? >> right. you are absolutely right. there's no perfect the scenario here unless you have a glass sea which is highly unlikely but it's the best-case scenario. >> that's the best-case scena o scenario. if you saw the fuel draining, you would have to be really something to go okay, i will wait for it to empty that. doesn't make sense. you are going to have i very little fuel and i will make the best approach as i can. that's with pow er so you have the most control and stability. >> we have a tweet from joe nemo. he said how many more hours in that simulator until you are a fully licensed pilot? >> well, i would say thanks to the tutoring i have had from mitchell and almost unlimited access to the trainer here, i

did a pretty good landing yesterday. >> i'd say so. >> i'm getting there. i'd say pretend co-pilot status at least. >> we have been asking that since week two. thank you, martin and mitchell. back to business. i will get my panel of experts in here first the. first to richard, what to you think, was this a sully sullen berger type landing when the plane is in one piece? >> i think there's a slim -- i think there's a strong -- it was definitely a sully sullenberger type landing. i remember houston did say, speculated the engines flamed out, ran out of fuel one stop and then the other stops. i think there's a strong possibility that the aircraft has gone in to the water and remained substantially intact. i'm not suggesting some sort of movie of it all on the bottom. >> mary schavio said this is a

strong, sophisticated plane and this would be a testament to the 777 if it did stay intact. >> it is like hitting concrete when you hit the water at speed coming out of the sky. that would help to explain the lack of a very big debris field but i'm not certain they are not going to find a debris field once they have gone in to a intense search area to the west. >> mary, i don't want to use your name in vain. you did say that, right? >> yeah. when i was an aviation professor i used a film provided by boeing. when they built the 777 they were required to take one and break it. they had to stretch the wings up until they snapped off the plane. you know those wings, they could flex up from like a straight plane it could flex up 70 degrees before they would snap. when they did snap, it was a powerful sound but they were tough. >> all right. thanks, everyone. stay with me, everybody. when we come back, how deep is three miles underwater? we will take you below the ocean

surface for a look. also the latest on the big story we are following tonight. a stabbing spree today at a pennsylvania hoochl wa was behind the stabbing? wa was behe stabbing? i wa was behind the stabbing? g wa was behind the stabbing? h wa was behind the stabbing? s wa was behind the stabbing? c wa was behind the stabbing? h wa was behind the stabbing? o wa was behind the stabbing? o wa was behind the stabbing? l wa was behind the stabbing? ? wa was behind the stabbing? wa was behind the stabbing? . wa was behind the stabbing? wa was beh? ? ? ? ? vital nutrients as you age? [ male announcer ] that's why there's ocuvite to help replenish key eye nutrients. ocuvite has a unique formula not found in your multivitamin to help protect your eye health. ocuvite. help protect your eye health. cozy or cool? "meow" or "woof"? exactly the way you want it ... until boom, it's bedtime! your mattress is a battleground of thwarted desire. enter the all-new sleep number classic series. designed to let couples sleep together in individualized comfort. starting at just $699.99 for a queen mattress. he's the softy. his sleep number setting is 35. you're the rock, at 60. and snoring?

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i want to turn to the latest on another story. a teenager boy went on a stack spree at hi pennsylvania high school today.

20 student and one adult were stabs in classrooms in the hallway of franklin senior regional high school in pennsylvania. 16-year-old alex hribal has been charge with four count of attempted homicide and 21 counts of aggravated assault. pamela brown is live at the scene with more. what can you tell us tonight? >> we know the suspect, alex hribal, aperiod before a magistrate earlier today. the magistrate denied bail saying there is no method of bail that could protect the defendant and the community. his defense attorney asked for a psychiatric evaluation saying he's not sure he is competent enough to stand trial. we heard from the district attorney in court today who said that one of the victims was vis rated. he's not sure if he is going to make it. he is a victim that is still in critical condition. the inspect this case walked in to school this morning and

started allegedly stabbing people indiscriminately. we know this unfolded before classes started. it was a chaotic scene. we have learned there were 21 injured, 20 classmates, one adult and four remain in critical condition tonight. >> did we hear or learn anything in court about why this may have happened? >>s that still the big question. we still don't have the answer. by all accounts, lex was a quiet student who kept to himself. he didn't have prior run-ins with the law according to officials we spoke with. we know the fbi searched him home earlier today and retrieved his computer. they are looking through that. at this point, it is unclear if he has a cell phone. the officials said earlier today they don't believe he owned a cell phone. they are pulling together the evidence that they can, going through the forensics and trying to figure out the motive. at this point it is a question mark as to why he allegedly did this. >> thank you very much, pam.

we aappreciate that. it has been more than a month since flight 370 has been missing and the families have been in anguish since then. joining me via skype is -- are we going to that? we are having a technical trouble with this. we will bring that to you. any way, the search zone has got an little smaller but it is up to three miles deep. the undersea terrain is full of valleys, canyons and mountains and those are some of the obstacles they are facing. we will go live with more on that. >> plunging to 15,000 feet below sea level is a journey in to a mysterious abyss, a journey few humans can comprehend. the boeing 777 is about 200 feet wide, 242 feet long and possibly so deep under the indian ocean that you would pass the statue of liberty, the eiffel tower and the tallest building in the

world in dubai on the way down and still be only a fraction of the way to where the plane wreckage might be resting. keep plunging, and you have entered a place sunlight can't reach. the pinger located is being towed well below that. 4600 feet below the surface. marine biologist paula carlson says aet at these depths marine life is unlike anything most people have seen. >> the deeper you go you find less and less. they have to be cold tolerant and might not even have eyes. they might be blind because they don't need to see. there's no light down there. >> keep going to the ocean floor and at 12500 feet below sea level is where you find the wreckage of the "titanic" that took 70 years to discover and where it still rests today. if it were turned upside down at 14,400 feet is where you would hit the iconic peak of washington state's mount rainier. only after all of that would you reach the spot where search teams believe the pings from the flight data recorder are coming from, 14,800 feet in to the

abyss. if that doesn't cap chur the magnitude of this search, imagine what one oceanographer described for us. he said picture yourself standing on top of one of the highest peaks in the rocky mountains looking all the way down the and trying to find a suitcase in the dark. >> oh, that's not good. >> got a lot of failures here. got a problem. >> only a handful of people have traveled to these staggering depths or even beyond. one of them is movie director james cameron. using a state of the art vessel, he dropped 35,000 feet or about seven miles to the deepest place on earth. he's turning the scientific mission in to a movie. >> it's that need to see what's there, beyond the edge of your life. to see the unknown for yourself. >> the pressure at nearly 15,000 feet is crushing and very few manned submarines can even withstand it. >> only a half dozen subs that can go to half of the ocean depth with a number of countries

having that capability. it gets to the point of collapse. it basically implodes. it just crushes. >> reporter: finding the plane is daunting. bringing it back from the deep even more difficult. >> i will get my panel of experts to weigh in on this to see exactly how they feel about it. mary, have have you ever dealt with the ocean depths like this in trying to retrieve a plane? >> not from these depths. there have been many other accidents in the water and there's one in indonesia called adam the air and it you in the water and like this it was lost about a month and when they found it, it was only in 6,000 feet of water. but at these depths, no. there's no recovery like it. >> jeff, if the wreckage is found, how will they attempt to bring it up? >> well, what they will do after they have sent down the robot with the side scan sonar and

actually located specifically where the black box is, then they will send down a remotely operated vehicle which has arms and which they will be able to pick it up, put it in a basket and bring it to the surface. >> i want to bring in eric, a physical oceanographer at the university of new south wales. eric, many of us envision the ocean as a crystal clear blue water but at these depths what is the ocean really like? >> well, it is pitch black at these depths. it is because ocean water doesn't let light through. if you go slightly below the surface, sure, there's a little bit of light. anyone who has been diving knows the further down you go the less the light goes through. as soon as you get 300 feet or so below the surface, nothing, this is darkness only. >> they said that silt sediment was going to be a problem. can you explain the 0 ocean ooze or sediment to me and our

audience. if the plane is resting down there what is the sea floor like? >> yeah. so the sea floor down there is a few feet, 20, 30 feet of what we call marine snow. it is ooze when it is on the sea floor. essentially what it is, it is literally snow. tiny particles that animals, that plankton, that krill, that shrimps, that all fall down very slowly. and over years, over centuries it has created this layer of ooze, which is very fine, very thin, easily distorted. >> at these depths could currents be moving the wreckage? would you expect debris to still be on the surface at this point? >> at the surface, you expect debris to be there. anything that floats. even though we had a hurricane come through the area a few weeks ago and that might have

stirred up something and made it so water logged. there's still things floating at the surface. at depth, probably most of it doesn't move anything. the currents at depth are weaker than the surface but it depends a little bit. if the plane went down in an area that is actually sloping, because we know there are still hills there. it's quite hilly f. there is a slope, things could actually roll down the slope and get further and further away. >> the sound then f it is rolling down a slope already at a deep depth -- >> yes. that makes it even more complicated to hear it, of course. parts of this plane, of the wreck might be slowly rolling down. it doesn't go fast, but it might affect the sound, yes. >> it is richard quest. if the plane or large parts of it went down relatively intact, as any parts from within that

would float, seat cushions, life rafts, anything like that that would float, how high up would they float? would they reach the top or reach neutral buoyancy in the middle? >> no, no. most of it would probably be at the top initially. but some things like life rafts might be water logged and get lower. they might slightly go lower. but the last few weeks or so, everything that is really floating is still floating. over longer time scales things may break up or over months or years you get barnacles growing on it that actually weigh on it and make it go downwards in to the ocean. but everything that was floating when the plane crashed is probably still floating. the reason we haven't seen it is, i think, mostly because we have been looking in the wrong place. where they are now searching for the plane wreck is so far northward that a current actually moves most of the

debris, most of the litter towards the west, towards africa rather than toward australia. the search has been looking to australia. so it might have been that a lot of the floating debris is there but just in a completely different area than we have been focusing on the past few weeks. >> thank you very much, eric. we appreciate you. i want to ask my panel. who was it said that said earlier, i don't know if it was david or someone, that said it might not be floating at this point. was that david gallo? i'm not sure. do you agree with that, jim tillman, do you think it would be floating at that point? >> i do. i can't imagine a situation where you wouldn't have anything that was floating to the surface because there are so many parts of that tharm would find a way to get to the surface. it's always ban puzzle for me. >> david, do you agree it would be still floating. >> yeah. if you think of the construction of things simply as the meal and drink carts they are made out of

honeycomb structures that are aluminum or plastic and epoxied together and it would take many years for that de degrade to the point where it wouldn't float. >> why haven't we seen any -- that's odd. maybe the debris is further south or what. >> we're not looking in the right area yet. >> all right. >> it's all so bizarre. thank you, guys. thank you very much, eric and thank you panel. everyone else stay with me. as the search narrows how are the families handling the latest developments? and next i will talk to the husband of a flight 370 passenger. (dad) well, we've been thinking about it and we're just not sure.

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it had been more than a month of anguish waiting for the families of flight 370. joining me is a woman who was on the plane. how are you holding up? >> i think reasonably well. >> i think the reality of the coming months and years is sinking in a lot more cheerily a lot more deeply. it has been that much harder in

the last few weeks to deal with it. it's not been easy. it's been tough. of course looking at the news and the wait is morer difficult or the dread of a call confirming and giving it a sense of finality. i don't know which is worse. >> so you said more clearly and deeply. can you explain that? what do you mean? >> i think the early weeks there was a lot more adrenaline and so many people and calls and just enough time to be there as much for one's self has one had to be there for others. over the last couple of weeks, the house emptied out, quite bare. just me and my mother. my daughter, i put her back in college. we are looking at a fairly empty, barren house.

some of the things that we have over the years have gone upside town a certain routine that we have been used to and a certain sense of respect of space that we engage from. all of that has changed. we are looking a all new movement i suppose in life where we have to reunderstand how one will have to conduct one's life, fresh. the scars, i think, are a little more vivid now, a little more accessible. the trauma a little more sharper as one lives and relives what the month has been. to me, the single most source of apprehension and dread is that very part of her at sea.

unfortunately it is something that has perhaps come true for my wife. i just can't bear the thought of that. >> i'm going to tell people about your wife. your wife was on her way to a u.n. conference in mongolia. she did a lot of volunteer work. she was a very good woman. your daughter decided to go back to college. you said you are not sure what to read in to the new situation if it is finality, because if it is finality that's the worse-case scenario for you. what do you make of this, hearing the pings, not hearing and hearing again. there's more hope, at least for searchers in finding some sort of debris. are you paying attention to the press conferences and the newspapers, or is it just too much? >> i keep pretty much the same

routine. i watch the press conference. i listen to it. the distance that science has traveled that technology is able to achieve today. part of me hangs in there to see what might eventually become of all of this. i'm fairly clear that as the days have gone by the probability of a happy ending has just diminished if not extinguished. i'm not so sure that i have great expectations from anything that is happening right now. i think perhaps any finding any debris brings up is a certain finality, a certain conclusive end to a story that began a

month ago. life is never going to be the same way again, one way or the other. i can't imagine that we would be back to where things were a month ago. there's no possibility of reset. >> i have to ask you this. because reading your story you had great advice for everyone, especially all of the families involved here. you said that you were using -- i think you said yoga, your new experience, recent experience with yoga to help you get through this. you are not there in beijing. you are not there in malaysia. it seems to me that you have sort of resigned yourself to the fact of the worst possibility. so what do you say to families here? is it time to move on? are you going to do some sort of service for your loved one? what's your advice? >> first of all, what i tried doing was a form of meditation.

i wouldn't call can it yoga. >> right. >> i didn't go to beijing for one simple reason, it didn't seem to serve any purpose. i'm not better educated by being there. i don't aid the investigation by being there. what being here, in my hometown, in my home has helped do is to not get overrun by the sea of emotion and anger and frustration that is quite natural when we assemble together and we have our own stories and our own sorrow. that simply doesn't go away. to that respect, i think it helped to not be there in these places, but it's not -- one feels for all of those people who i watched on tv from time to time, how difficult it has been for them. i can't say what they should do.

i think i said this before, i'm not one who lives -- i don't have great use for hope. i think we go with the reality as is. and we go with what it is that is available at present in front of us. we go with a certain skepticism and doubt and intense scrutiny of the facts as presented because there's also a wave of secrecy and cloak of -- sometimes. so some doubt and skepticism and then beyond that we just go with what is the reality that one is willing to make peace with. >> thank you. you are a very brave man. the whole world is thinking about you. we appreciate you. >> thank you. >> we'll be right back.

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the search area has narrowed significantly but the hardest part of the hunt for flight 370 may be still ahead. what happens after it is located? how do we bring the wreckage to the surface? i'm back with my panel of experts. i'm going to start with jeff. the next step in the search would be auvs or towed sonar. searchers say they don't want the excess noise in the water from the auv.

do you agree with that? >> it makes sense. they are going all in. they feel like this is their best chance to find these pings. they have located them here and there in an area of 12 miles across. it's not small enough yet. the batteries might still have a little juice left in there. so they really want to narrow it as much as they can before they commit the auv. apparently, the auv is a much slower way of scanning the bottom. it takes about six days to do what the towed pinger locater can do in one day. so if there is any hope -- if they go a couple of days without hearing anything at all, i think it will be time to cut bait and go for the auv. >> for the blue fin 21. how long could all of this take? >> it could take weeks, months and i'm sorry to say years. >> yeah. i think you are right. mary, obviously they are going to want to get every piece of the debris up, i would imagine. they are not going to leave

anything. you know where they reassembled -- are they going to reassemble as they do with other airplanes that have had crashes, reassemble it in a big hangar to try to figure out exactly what happened? >> the reasemably is necessary when you can't figure out what happened or what caused the crash from the black boxes and the other daechlt often you can figure out why a plane crashed from the maintenance data and flight data recorder. usually you have more indication from air traffic control and other things. but for example the reassembly of twa flight 800 is because they couldn't figure it out from the black boxes. when we do private crashes, we don't reassemble them unless you can't figt out but you do comb through the wreckage that you get up. i think it will depend on entirely what they find on those black boxes and if they have clues and solutions. if they have no solutions, then they will need to recover but that's going to be very expensive from that depth and i

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>> we're back now. richard quest is here. we talk about debris -- and i hate to say debris because it can be remains. >> in the case of 447, relatives were given the option if the

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 theus