cnn's david mattingly is inside of a submarine off of the coast of horseshoe bay british colombia. hrough the challenges of an underwater search. >> don, the challenge is, it's an incredibly long list, not the least of which being the tremendous depths you have to go to and the pressure you have to deal with going to the bottom of the indian ocean. we are talking a couple of miles down. there's only a half dozen manned submersibles that can actually go down and do that kind of work. this vehicle we're in right now is not one of them. we're at the bottom of horseshoe bay in british colombia. i'm with phil nuytten. he's a internationally known as a deep water dive expert. you actually develop vehicles like this so people can go deep in the water, places they never have before. and something i have been learning from you as we have been down here is how difficult, even the simplest move seems to be. >> yes. it tends to be quite a chore. no question about it. the biggest attribute you need for this kind of work is patience. >> show us. we have a mock up of a black box. of what a black b

so we have david mattingly now underwater. he is joining us from inside a manned submersible at the bottom of horseshoe bay in vancouver. david, first of all, what is it like in there? my understanding is it has to be incredibly claustrophobic, hot, stuffy. what's it like? >> well, good thing we like each other down here. let me put it that way. we are shoulder to shoulder, toe to toe. but really, the important thing we're trying to illustrate down here are the conditions that someone would have to work in if they're actually going down to the bottom of the indian ocean to try and find the black box. now, look at the conditions of the water here right i know. you see how cloudy it is? it would be just the same way at a couple of miles down at the bottom of the indian ocean. so right now we're going to have phil nuytten. he is going to try to take what we have as a mock-up of the black box, and you already have it in a claw. that in itself takes about ten minutes. >> yes, it does. it takes a lot of very delicate finessing to ge

david gallo and david mattingly.ll right, coming up, not a single piece of debris from the flight. >>> and questions about ukraine taking an ugly turn outside a synagogue. and the deal that they have made to try to diffuse the crisis. ♪ [ banker ] sydney needed some financial guidance so she could take her dream to the next level. so we talked about her options. her valuable assets were staying. and selling her car wouldn't fly. we helped sydney manage her debt and prioritize her goals, so she could really turn up the volume on her dreams today...and tomorrow. so let's see what we can do about that... remodel. motorcycle. [ female announcer ] some questions take more than a bank. they take a banker. make a my financial priorities appointment today. because when people talk, great things happen. >>> with planes still in the air over the search area today, clearly hope remains they will either spot something on the surface or just underneath it. so far as we have discussed the hope has gone almost entirely unfulfilled.

and now we the man we saw in david mattingly piece says vrn on board remains under suspicion.hat incompetence? what do you see as someone who has been in this situation? >> and somebody who has been in a very long time. i think what they're doing is covering up government incompetence, not covering up the facts of the case. i think they truly don't know the fax of the case. things like that that they really don't know and somebody went out and the copilot and the pilot, they're trying to cover up that they just don't know and they're incompetent. the same things on the radar. except in that case it delayed the proper search, finding the proper search areas for about a week. so now they're pointing fingers at each other. but, again, they're trying to cover up government incompetence, not the fax surrounding this case, i think. >> and miles, i mean, what about the thing about the pilots and who spoke what? this is pretty important that they haven't been able to -- first they said it was the copilot who spoke the final words. then they said well, he did a lot of the speak, but th

. >>> plus, you're looking at ooh live picture of our david mattingly inside a sub. he is going down right now, being lowered to the bottom of horseshoe bay in vancouver. coming up, david is going to show us how to cut through debris and get to a plane's black box. even watching those bubbles start to go up as you're going underwater here makes me start to feel very, very nausea. we also have breaking news in the ferry story. the captain of the ferry that sank with hundreds who are still on board tonight is now formally under arrest. how did he manage to get out when most of his passengers didn't? and a scenario for how tonight people on that ship may still be alive. [ male announcer ] what if a small company became big business overnight? ♪ like, really big... then expanded? ♪ or their new product tanked? ♪ or not? what if they embrace new technology instead? ♪ imagine a company's future with the future of trading. company profile. a research tool on thinkorswim. from td ameritrade. a research tool on thinkorswim. predibut, manufacturings a prettin the united states

david mattingly, cnn, daytona beach, florida. >> now i want to bring in our aviation specialists, lesould be a lot of debris. yet here we are 40 days and there has been none. there a scenario you think this plane could be essentially intact at the bottom of the ocean? >> the only scenario is if that airplane was guided down by a pilot in a controlled ditching situation. and even then there would still be fragments broken off. and in this scenario, we're talking about if there were survivors, then i would say well, why weren't the doors open with the slide rafts deployed? and the slide rafts have emergency locator transmitters, elts. they would have been thrown into the water. i find it highly unlikely. >> i guess if you're in some scenario where you're flying the plane and the only person alive. >> correct. >> mary, does this add up? as you just saw in david mattingly's reporting, a plane hitting the ground and hitting the water at these kinds of speeds, unless it's a very controlled landing, is essentially the same thing. but if there are pieces as in almost any scenario other than t

and as david mattingly reports, the success could depend on what happened the moment the plane hit theater. >> we've seen what happens when passenger jets crash. >> oh, my god. >> from the tragic and unexpected like last year in san francisco to the planned and controlled like this demonstration by the discovery channel in 2012. and this one from nasa and the faa decades ago. unlike the missing malaysia airlines flight 370, they all crashed on land. but surprisingly they provide clues to what might happen next in the investigation. >> you're telling me that crashing on water is no different than crashing on land? >> depending on your impact velocity, depending on the impact angle, the effects could be the same on water and land. >> aviation investigator anthony brickhouse takes me through a field of aircraft wreckage used at the university. the lesson learned here, the difficulty of finding a sonar signal of flight 370's wreckage depends on what was happening in the final seconds of flight. at less than 45 degrees we're more likely to see large pieces of aircraft? >> yes, at something

david mattingly, cnn, daytona beach, florida. >> fascinating, thank you, david.searchers do find pieces of this plane, what can they learn from them? we're going to talk about it with a former faa accident inspector. humans. we are beautifully imperfect creatures living in an imperfect world. that's why liberty mutual insurance has your back, offering exclusive products like optional better car replacement, where if your car is totaled, we give you the money to buy one a model year newer. call... and ask an insurance expert about all our benefits today, like our 24/7 support and service, because at liberty mutual insurance, we believe our customers do their best out there in the world, so we do everything we can to be there for them when they need us. plus, you could save hundreds when you switch, up to $423. call... today. liberty mutual insurance -- responsibility. what's your policy? >>> a devastating story to tell you about out of nigeria. army troops are leading the search for more than 100 girls kidnapped from a government school late monday. authorities sa

later on "early start," cnn's david mattingly goes deep, giving us a firsthand look at what the ocean floor retrievable operation could look like from inside a manned and cramped underwater vehicle. >>> happening right now, rescuers so far failing to find anyone alive in the sunken ferry off the coast of south korea, this as we learn new details about who was at the helm of this ship when it suddenly sank. we're live next. number 1 of my 20 is for chacne. you know, chin acne. uh-huh. not to brag, but i have the chin of a teenager. here you go. dinges for everyone! when i get hangry anything within arm's reach could be part of my number 20. hm, this is potpourri. mmmm. the new amex everyday credit card, with no annual fee. that is not food. make 20 or more purchases in a monthly billing period, and earn 20% more rewards. and a coat. it's membership that rewards you for the things you already buy, everyday. what's your 20? i can't wait to get to mattress discounters because the tempur-pedic bonus event is ending soon. choose $300 in free gifts, and, get up to 48 months interest-free fin

david mattingly, cnn, atlanta. >> pretty incredible. you heard, he was staggering and was disoriented, but that's it. he should have been dead. it's a miracle. >>> coming up, breaking news off the coast of south korea. we have the death toll numbers just coming in at this moment. and new information about why the ship sank. >>> and the results of our exclusive "outfront" investigation. can the final texts and e-mails from flight 370's passengers be retrieved from phones that have been sitting three miles beneath the ocean surface? what does an apron have to do with car insurance? an apron is hard work. an apron is pride in what you do. an apron is not quitting until you've made something a little better. what does an apron have to do with car insurance? for us, everything. >>> breaking news. the death toll from the capsized ferry rising tonight. the number is now 181 people. 121 are still classified as missing. so why did the ship suddenly take on water? we can tell you tonight investigators are now taking a closer look at two things sp

david mattingly is on the phone with more on the situation. do we know who the shooter is, david? >> reporter: not at this point, carol. that confirmation just coming through just in the last couple of minutes, that the shooter in this case was deceased from an apparent self-inflicted gunshot wound. that um canning from the cobb county police department. this area, kennesaw, georgia, is about 20, 25 miles north of atlanta. it is a suburb of atlanta. the original call came in about 6:00 this morning calling authorities there with reports of an active shooter at this workplace. a fedex distribution facility. a short time ago they told us that they had secured the area around the facility, and that they were working to clear the facility itself, and now this confirmation that the shooter has, in fact, died from a self-inflicted gunshot wound. authorities also confirming that six people were injured in this shooting. the hospital telling us that at least one of those six was able to walk into the hospital. one of them was in surgery and police now also telling us that one person is in

david mattingly joins us now live. if and when the team does find black boxes, how do they actually go about retrieving it stuck in wreckage? >> well, as you might expect, it is a very slow and tedious process. and we're down here to demonstrate it. there are a couple of things to show you. there are just a couple of tools at their disposal. on the left there, it looks like a vinyl record, a cutting saw. and we'll switch to the camera right now, and on the lower left-hand portion of the screen is another device, looks like a claw. with me is phil nuytten, a deep-water diving expert. and it would take a lot of time just to get a piece of metal or metal tool there to get to the instruments to use them. and while we're talking, let's go ahead and try to cut that. because that in itself is a process. go ahead. >> okay, jeff, you want to fire up the hpu? >> hpu is hot. >> >> hpu is hot and let's commence cutting. >> and this is just going to be for one cut. to process it takes about 30 seconds. you're dealing with poor visi

the difficult, delicate recovery to give us the skills and sense needed for such a job, cnn's david mattinglyhere to give a demonstration. and to give the willies to claustrophobics everywhere. >> reporter: that is correct, we are off horseshoe bay here. but the conditions here are very similar to what a manned mission may encounter at the bottom of the indian ocean where they're searching right now. and phil nuytten is with me right now. a deep dive expert. and he actually develops the vehicles that we're in right now. so phil, you have explained to me that this is a game of inches. something very delicate. that if you're going to go down and collect a black box you can't just go down, and zip right back up with it? >> no, that is very true. >> reporter: we have a black box right here already in the claw of this vehicle. and just show me o-- it is a vey delicate operation just to put it into the basket that we need to put it in to carry it back up to the surface. and while you're watching this, notice how the water is moving and how cloudy it is here. it is sediment that can be a problem if

let's get to cnn's david mattingly, who is on the phone, on the way to the scene. ime ago we're hearing from local police saying they do have an active and fluid situation at this fedex distribution facility. they say that they have secured the area around the facility, and they're now working inside with officers to clear that facility, but then, again, they're emphasizing this is still a very active and fluid situation, indicating they really don't know exactly what they're dealing with right now, or what they're going to find inside that building. but the call came in about 2.5 hours ago. there's a very large police presence there now. we have reports from a local hospital saying that six people from the fedex facility have been taken to the hospital for a variety of injuries. they won't say what those injuries are, but they say at least one of the six was able to walk into the hospital, at least one of the six is now in surgery. but, again, not confirming exactly what those injuries are. there was a statement released by fedex a short time ago saying that they'r