Work of their professional lives, slowly making their way in and around a sunken ferry, looking for survivors. More than 270 people, many of them High School Students on a field trip did not make it off the vessel. And looking at this vessel as it sank it is not hard to see why. Passengers, as you know, were initial initially told to stay where they were. And somehow, the ships captain was among the first to leave. It is all making for a nightmarish day for loved ones on shore, and anguish as they wait for their missing loved ones. Kyung lah has more. Reporter yes, the coast guard is saying that they have laid down those search lines. Theyre like physical rope that they put on the ferry itself, the sunken ferry where they can go room by room. They have not entered this ferry at this point, anderson, and from what we have been able to understand, anderson, they have been looking inside it. And they see things floating but will not be able to see beyond that. So there is more news. Were expecting to learn much more has the hours pass, on what is now the beginning of the fourth day of this hunt. And are families still waiting in the port area . I understand there are counselors on site. Reporter there are counselors on site. And what theyre here for, the people you see over my shoulder, you can see the families just looking out at sea. And they cant see the ferry. They cant see the search operation. What they are hoping for, though, is some news trickling in to give them some sort of hope. Ferry captain Lee Joon Seok answering hundreds of questions of desperate relatives. Why would you order passengers to stay on the sinking ship . The current was very high and the water temperature was cold and if you had not worn a life jacket or even if you had worn one, if you got off the boat with no judgment you would have been swept very far away, he says. The captain is handcuffed. Arrested today on five different charges, including abandoning ship and causing Bodily Injury including death. In this new lee releasly releas you can see the captain after he was rescued off of his own sinking ship, and left behind the lives of many, in the eyes of the public eye he is enemy number one. Charges that he was not on the boat when it sank, they still hold him responsible for failing to slow down and making the turn excessively. Also released today, radio traffic between the sewol ferry and authorities. The first sign of distress came in at 8 00 a. M. Local time. Now all that remains of the ferry above the surface are buoys marking its position. New footage from inside the doomed ferry continues to surface. And in this survivors video, the ship is already at an extreme angle as passengers run to high ground, others brace themselves inside as they were instructed by the crew. It is unclear if these people made it out alive. One man who did make it out alive couldnt bear the reality in the end. In a wooded area near where distraught relatives are camped out in jindo, police say the vice principal of the school where the children attended, in a suicide note, police say he took responsibility for the lives, and asked for his ashes to be placed by the site. I want to jump into the sea, she says, thinking about my child in the sea, how can i as a parent eat or drink . I hate myself for this. Now, the captain said he had a reason for ordering people to stay put. I mean, it is hard for some viewers to understand why so many passengers listened to that as the ship sank, can you explain . Reporter yeah, it is very difficult, especially those of us in western nations to understand how anyone can abide by an order, sit in a room as it is beginning to fill with water or even sit as the ship is tilting. The reason why here in korea is this is a very unique culture, a very typical of asian cultures but especially strong in korea. What they prize is obedience, listening to your elders. And remember, were talking about High School Students on a field trip. There were hundreds of them. And they were told over a loud speaker by an adult to stay put. So it is a cultural norm to listen to that. That is why those students stayed. And that is why it is especially distressing to these parents who have really raised their children to listen to the elder s. All right, kyung lah, appreciate the update. And the Commanding Officer of the uss bonhomme, what is the latest, captain, you can tell us about the u. S. Involvement in the search and rescue efforts . I know your vessel has been involved and the navy salvage ship is also moving towards the area. Well, good morning, thank you, mr. Cooper. I would like to say our thoughts and prayers on the bonhomme remain with the passengers of the ferry and their families. Today the weather is much better here, it is clear, with easterly winds about 25 knots. Also clear with seven miles visibility. So today looks to be a day that we can continue to help. So far the bonhomme has helped with missions, were flying ospreys and are 350 degrees, five miles out from the site. And are you still with us . Yes. Okay, sorry, what are you being told by South Koreans about whether there could be people still alive inside the ship . Is that still an operating assumption as far as you know . Well, we are still engaged in search and rescue operations with our korean partners. The koreans are to lead. We made our best speed possible to get here as quickly as we could and join the effort. And we remain committed to help them any way we can. We exercise about 25 times a year with the korean navy and we have a very strong working relationship with them. We believe this whole effort is really about friends helping friends. And the bonhomme is there to help them in any way we can. At this point you can no longer see the ship at 58 on at all on the surface of the water. There are just buoys . That is correct, the ship is completely submerged. And i know you say youre looking for anything on the surface. Are you seeing debris on the surface . Yes, sir, our missions that have gone out have seen some debris. And we saw that yesterday. We have three scheduled missions today that will be taking off here, the first one, in about an hour to go back and help with the effort. The South Koreans have a tremendous effort on station right now. The coast guard, navy, air force, they worked throughout the night. Theyre working tirelessly, the south korean navy, and civilian divers. They used paraflares dropped on scene to do as much as they can to help with the survivors. Well, i appreciate you being here talking with us tonight, captain, thank you very much. Digging deeper with the cargo ship captain and Maritime Safety officer james staples, retired u. S. Navy diver. Bobby scully, let me start with you, how realistic do you think there could still be people inside the ship that are still alive . Captain, can you hear me . Apparently not. Excuse me, bobby, can you hear me . Apparently probably having problems with that. We also want to talk about the conditions for the divers who are undertaking the search and what kind of precautions they have to look at. For bobby, are you there . I am now. What are the conditions like for the divers in the water . This is the hardest diving and salvage job you could possibly imagine. The current is just ripping through there. These divers have to enter this hull of a moving ship that is under water. And they are diving in a surface supplied diving rig, which is a helmet and the air supply is being delivered to the divers through a hose that goes to the helmet. And they have to drag that hose behind them as theyre trying to enter the ship and go through and search all of those spaces for the survivors. So they are being encumbered by that hose that also includes the communication, the light, the air that theyre breathing. And that slows them down. They also have to worry about that hose being either cut by any of the sharp metal inside that ship or being pinched, which would have their air supply. It is dark in there. At the same time, theyre trying to rush through to find those survivors because they know that time is of the essence. They have a limited amount of time for each dive. So it is just the hardest dive that they could possibly be making. Do they use those air hoses to be able to stay down longer than they would if they just had a tank of air . And i guess a tank of air would be hard in narrow spaces. Well, they are actually wear ing an emergency tank of air on their back. That is part of that rig. But it is in the u. S. Navy and probably in the korean navy, as well, it is protocol that when you are going inside a closed space like inside this ship, you must have an outside air source. And that is why they have to use these particular rigs to have the air source coming from the diving ship through that hose. Got it. And then the hard hat. And captain staples, we know that the captain of the ferry has been arrested. Prosecutors are quoted by the south Korean News Agency as saying that the captain failed to slow down while sailing the narrow route and making the turn excessively. Is that in line with what you think could have happened to the ship . And does it make sense that the captain even though he was not on the bridge at the time would be the one bearing the responsibility . Well, absolutely it will be his responsibility to bear, he is captain of the ship as long as he is on the ship. If he had negative stability by the time he was getting down to his port of arrival because of fuel burnoff or whatever, then turning the ship sharply would cause a large inclination of the ship. And the large shift of cargo which changes the center of gravity, which has a great deal to do with the stability. And that could be the number one cause here. We still dont know the route he was traveling if he was inside or outside the traffic lanes. There are still variables to investigate where he actually was when this happened. What his speed was, and of course, why he was not on the bridge. And one of the reasons was he left the port late the night before due to fog. He might have been late due to fog, and early in the morning he might have gone down to get some rest, we just dont know what he was doing at the time. And this was important to point out, the boat had only life rafts as opposed to boats. We hear there were only two life boats deployed. But we dont believe there were any life boats at all, but rather life rafts. And the distinction was you would have had them available. What you have are containers that would have been manually released. If the vessel was stable, the life rafts would have had to go in the water in order to deploy. The passengers would have had to make their way down a gang way to get into the water or jump to get into the life rafts. Given the temperature of the water, of course, that would have been a serious issue in and of itself. But the fact is the captain didnt call for an evacuation until the vessel was already listing which made it impossible for the crew to go and release the life rafts into the ocean. And which is part of the reason that we only saw two of them deployed. So in terms of trying to prevent Something Like this happening, that is something the south korean authorities will be looking at. I think so if you look at similar ferries out of the baltic, the ships have a similar size, they have an array of life boats and preservers, life rafts that are available in the event of emergency. That was not available to the passengers on the sewol. Jim staples, bobby peterson, we appreciate you being here. Just ahead, a former navy s. E. A. L. Takes us inside the rescue effort step by dangerous step, showing us what it is like. Also, well go to Paula Hancock who has an update on what the divers are doing. And later, what chances they have of finding fliefrs. Flight 370 i dont want to think about the alternative. I dont even know how to answer that. I mean, no one knows how long their money is going to last. I try not to worry, but you worry. What happens when your paychecks stop . Because everyone has retirement questions. 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Well be here at lifelock doing our thing you do your share spontaneous moments thing, alerting you in ways your bank alone cant. Get lifelock protection and live life free. Tonight, breaking news, the search for the missing students on the ferry that went down. Paula hancock is on a boat close by to the sunken ferry. What have you seen . What are conditions like, paula . Reporter well, anderson, you wouldnt know that a 300 ton vessel just went down in the sea, unless you see the markings. No part of the ship is above the surface. This is a huge search operation, just a rough guess when we got here, i counted about 120 that range from the large ships from the navy. And also the dinghys for the divers. It is not just an official search operation. You have a lot of Fishing Vessels joining in the search. Now you we can see a number of dingys filled with divers. Obviously, what is happening on top of the water is not as significant as what is happening underneath. The divers right now are underneath us trying to get inside parts of the submerged ship. That is the Crucial Point for them at this point to try to find out if there are any survivors. Or if not to try to start the grim task of recovering some of the bodies that are below the water. And about maybe 500 yards away from the spot where this submerged ship is are two cranes. Theyre not being used at this point. On the other side i can see another two cranes. These are not part of the system, when they become part of the search this search changes dramatically. They could be moving the ship. But at this point it is very much search and rescue still, with a couple of helicopters in the air keeping an eye on the situation. So it is a heightened search situation. Paula hancocks, thank you very much. We talked before the break about the remarkable challenges facing dive teams, the difficult conditions. As well as the formidable and unsurmountable situation. Appreciate you being with us. First well take a look at the animation of the ship actually going down, that is the current position, lets take a view at it right here. Now where would divers go, how deep would they have to go . Well, the majority of the people that were told to stay put they were in these areas right here, which is the berthing departments. So youre looking at surface right there. 40 to 50 feet below the surface of the water for the fifth deck, which is where the majority of these people are. Where would divers try to enter the ship from . Would it be multiple location . It would be, and they were experiencing problems trying to get access to these areas here on the second deck. I understand they were able to access some of the areas down here on the fifth, which is where most of the people are, but again, theyre 50 feet below surface. As a diver, the less time you have, the less you can go even getting in, the water has to be swirling inside. Look, the divers conditions theyre dealing with, imagine being in a washing machine with 50 degree water and visibility of about six inches, that is what these guys are dealing with as divers going through a ship essentially using their hands. And when you try to go in, do you go to the bottom of the ship and work your way down . It all depends on the search patterns that they decide to use, they will have a crew here, then maybe here. They will start deep and they will try basically and converge in the middle. And theyre just going to be basically working their way in the middle, starting at the lowest, which is the most dangerous and pressing and work their way up. And they try to do it as systematically as possible . That is it. And there is a lot of talk about the possibility of air pockets. We dont know if there are, if there were is there any way to tell where they might be . There are three things you had to have gone through to be a survivor right now. You had to survive, if they hit something, a blunt trauma, you had to survive that. Number two, an area where there is breathable air. Most likely those will be where the cabins are. I understand a lot of folks were in the cafeteria area. That is about an hour and hour and a half of being submersed in the water. One or two people were able to get a majority of their body in the water line, theyre standing on something, it will fight off that hypothermia. Could there be air pockets . The top level, which is the most under water, i mean, couldnt there be air pockets on each floor or is the bottom one if you go back one slide here, the best bet, obviously, the area is going to come up. Okay, and as we see the ships going down were realizing it is becoming less and less buoyant. So if there are air pockets anywhere, the best bet will be right here. Look, we have three cranes out there, you go ahead and put one up there. Theyre going to be able to raise the ship up or at least keep it stable. And then you get crews, welding crews putting access into the hull. And you send people down into it. You think that is the best bet . Right now that is the best bet, weve tried the option of getting there with divers, you literally do a belly band, two of the cranes there, one tlrks now you control the ship and start to send people down. It is just so horrific as a passenger and survivor, it is counterintuitive. So once you get there, trying to do that option right now it is going to be very difficult. Thank you so much. And adding to the notion of the survivors under water, and the experience of this man, a nigerian cook, take a look at this video. He was rescued after three days under water, he is inside an air pocket in a sunken tug boat at the bottom of the atlantic. This is actual footage as they find him. Suddenly a hand reaches out from that air pocket, 100 feet down, they thought everybody was dead. They didnt know there was going to be a survivor on board. At first the dive team thought they were encountering a corpse. He grabbed the hand, they grabbed back. Coming up, why crews may be getting ready to put more vehicles in the water in the search for flight 370. And later, well tell you how teams deal with obstacles like debris. Some new develo