jean casarez is following the story for us. ll us more, jean. >> reporter: the students are being released to their parents right now. if their parents are not available, they're being held in a separate location. the school is in lockdown. the victims range from 14 to 17 years old. we are confirming 20 or at least 20 victims have been flown and taken to hospitals. four we understand needed surgery. they're doing all right at this point. i think it's too early in the game saying they are doing all right. surgery is surgery, right? the one question is who is the student being held, what is his age and why? what would be the motive to take a knife into school, 7:13 this morning. the student was there right when the doors were opened of his high school in pennsylvania. >> students were gathering to go to class, so they were all in a big bunch in the hallway, right? i'm trying to figure out, one suspect with one knife, 20 students injured although it's not clear that all those injuries came with stab wounds, how he was able to injur

also jean casarez joins me again, a legal defense attorney in her own right as well.ington, d.c., cnn law enforcement analyst tom fuentes. the fbi is involved already. we know the locals have taken over the bulk of this. we know this doesn't appear to be anything terrorism related at this stage. what is the fbi specifically going to be doing? >> well, the fbi was asked to assist the local police and that's exactly what they're doing. the police are in charge of it. the local prosecutors will determine whether the individual's charged as an adult or juvenile. as far as the specific bureau assistance, the computer examiners were sent, evidence response team members to do forensic work, the crime scene investigators, if you will. additional agents to help with the probably hundreds of interviews that will have to be done in this case. and also the people from the victim assistance program which is run by the fbi which will provide assistance to the families of the victims of this incident. so that's -- >> will the fbi at all be trying to interrogate this young man either

cnn's jean casarez has more. >> reporter: the sea has gone silent, more than a week after the last ping heard, black box batteries are likely dead. with no evidence in hand, searchers for flight 370 are considering their next moves. >> we may not have all the clues. and we may have overlooked something. >> reporter: australian officials say they will scale back the air search soon. >> the chances of any floating material being recovered have greatly diminished. >> reporter: but under sea recovery efforts may expand if necessary, experts say, extending parts of the search area. >> i think that will involve retracing that initial arc of the suspected flight path. and that will require some very broad sonar tools. >> reporter: sonar, even more powerful than the bluefin-21, that can dive deeper and create even wider images of the ocean's bottom. it is still the best tool searchers have at their disposal. >> until we actually locate some debris with sonar there is no point in bringing in remote operated vehicles or manned submersibles. so sonar is going to be the tool of choice for the fores

jean casarez is joining me with more. what kind of legal action have you seen?sed by a judge saying it was improper at this time to ask for maintenance and sales documentation on the boeing aircraft that went missing. but that does not stop the attorneys from the u.s. flying to malaysia and elsewhere to get clients. those clients being grieving fa. ly family members. >> the images are heart-wrenching. families of the missing slowly coming to terms with what is beginning to seem inevitable. >> we must now face the reality that the plane is lost. >> right now the families are being misled from very unethical u.s. lawyers. >> reporter: justin green has tried aviation cases for 17 years. green says he is aware of multiple u.s. law firms who are in asia right now solace sitting family members from flight 370. >> these lawyers launched within days, maybe even hours of a crash. ambulance chasers, in essence, but they are ambulance chasers on a global scale. >> reporter: how high are the stakes? perhaps billions of dollars in cases that could potentially be brought agai

jean casarez, thank you so much. this information developing at the moment. we will find out more and fill you in. >> first of all, let's talk about the victims. 19 students, one adult. many of them were taken to different hospitals. several to the forbes regional hospital. the director of the tram ma center there spoke just moments ago. none of these are superficial wounds. all of the patients have torso stab wounds, chest, abdomen, back, flank. all of their stab wounds are in the area of the torso. >> none of these were superficial wounds. that gives you a sense of just how seriously they are taking this, just how seriously these cases are. i'm joined by elizabeth cohen from atlanta. elizabeth, give us a sense of what these patients are now facing. we hear stabs to the chest, to the abdomen, to the flank. these sound like some pretty serious wounds. >> they definitely do. when doctors use the words life threatening and penetrating, this is definitely serious. they also said that internal organs were affected. they brought in a liver surgeon into some of the

jean casarez has more. >> the images are heart-wrenching.amilies of the missing slowly coming to terms with what is beginning to seem inevitable. >> we must now accept the painful reality that the aircraft is now lost. >> but there is also another group on site waiting anxiously. the lawyers, ready to scoop up clients and begin the long battle for financial compensation. >> right now in malaysia, in china, the families are being misled by some very unethical u.s. lawyers. >> justin green has tried aviation cases for 17 years. green says he's aware of multiple u.s. law firms who are in asia right now soliciting families from flight mh370, earlier than united states law and ethical rules would permit. >> these lawyers launch within days, maybe even hours of a crash. ambulance chasers, in essence, but they're ambulance chasers on a global scale. >> how high are the stakes? >> a possibly limitless windfall of millions, perhaps even billions of dollars in cases that could potentially be brought against malaysia airlines and boeing among others. b

as with "titanic," the wreck will have the last word. >> reporter: jean casarez, cnn, new york. >> all right, jean. appreciate that. 102 years later. what happened to the mighty "titanic" still fascinates people around the world. joined by a research oceanographer with the marine physical laboratory at the scripps institution of oceanography, university of california san diego. he was part of the team that found "titanic" at the bottom of the north atlantic. thank you for joining us. do you think that investigators are going about the search for flight 370 in the right manner? >> thank you for inviting me, don. first of all, yes, i think so. "titanic" did not have a ping er on it that we could listen and be guaranteed within a few miles of the wreck in order to know where it was. and given the fact this is a standard search procedure that the u.s. navy uses for its military planes and things like that, i really can't see any other options. >> so you think they are searching in the right area, jules? >> if they heard the pinger, the answer is yes. i spent a bit of time looking in to the

jean casarez has more. >> reporter: from the air, on the water, the 45th day in the hunt for malaysiat 370 has come and gone. it's a somber milestone in the search as american attorneys can now approach family members without violating ethics rules. this 45-day rule. what is it? >> it is the similar amount of time in which an american lawyer has to wait before they can reach out to a family who's lost a loved one in a plane crash. >> reporter: aviation attorney daniel rose says families who choose to file suit in american courts against u.s. aircraft manufacturer boeing may face difficulties. >> if we don't have the black box with all of the critical information on it or any part of the wreckage, it would be very hard, nearly impossible to maintain a claim against boeing in any court in the united states. >> reporter: without a viable lawsuit, families won't get access to crucial information. so families won't be able to get maintenance records from boeing, manufacturing records, nothing. >> that's probably true. >> reporter: malaysia air, on the other hand, may have the deck stacked

so that flight 370 never forgotten. >> thank you very much, jean casarez.y experts reaction on the clash between flight 370 and malaysian officials. joining the panel is an international pilot and author of "flight for safety." good to have you aboard. okay. thank you for joining us. first, i want to go to bill. a committee of the families released a list of 26 questions they want malaysian authorities to answer. the first 12 are on the elt emergency locater transmitter, including this one. they are a little long. bear with us. they are there on the screen for you. is it possible to break the elt at high impact? where is the 406 mega hertz elt located? the tail of the flight or the ceiling of business class? and when a plane is trying to land can elt be activated. are you surprised the families have so many questions about the elt specifically? >> that's a product of the fact we have so many unknowns. the elt could be in a couple of different places on the airplane. one thing it is going to do as soon as the plane goes in the water and sinks it will stop tr

c cnn's jean casarez has more now. >> you are all bloody liars and you are lying again to us now. >>rustration bubbling over. the relatives of those on board malaysian flight mh-370 want information and they want it now. that may be why a malaysian delegation is traveling to beijing to meet with the families on the ongoing search. the families have a list of 26 questions that they want answered including what is in the flight logbook, maintenance records and the recording of air traffic control that very night. >> it's very personal, very personal, from each person's idea of what happened in the very beginning. >> reporter: maarten van sluys knows what the families are going through. he lost his sister on air france 447 in 2009. van sluys flew to help survivors. he says they have become like family. >> embrace people. you don't even know where they live. what they do for a job or anything. and you start to hug these people, people who are crying, very loud and very bad shape. and suddenly you feel, oh, i know this man. >> reporter: with no evidence on the fate of the plane so far, so

. >> joining in on the conversation along with jean casarez, legal analyst paul callan and former prosecutorand also with us cnn comment at a timer and defense attorney, mel robins. paul, to you first. i've always thought if you don't have the evidence and you can't specifically blame one entity, say, rolls-royce or boeing or malaysian airlines or the malaysian government. if you can't pinpoint the blame, the best defense is for all of the parties to blame each other. is that the same here? >> of course, that's very, very true. i think what's astonishing here, these lawyers, lawyers that are trying to hard to sign up clients, that even though they don't know what caused the accident, they're filing lawsuits. this chicago law firm that jean was just talking about, actually filed a lawsuit in chicago against presumably boeing and other entities, because it's a boeing plane. but we don't know if it was -- there was a defect in the plane. we know nothing how the accident happened. >> but smacked down by a judge not because they were heartless. they got smacked down because of a technicality. >>

cnn's jean casarez has more on the desperate and difficult search. >> now, i stress, this is very deeporter: very deep and very mysterious. search vehicles may have to travel 2 1/2 miles down to try to find aircraft wreckage. and much about the ocean floor is unknown. >> it is a mystery. it's very, wn it's deep. it's 4,500 meters. >> reporter: christine dennison is an ocean explorer. she says what adds to the mystery is the terrain. >> you have valleys, you have gullies, you have mountain ranges. it's very much in areas that will mimic what we have topside. >> reporter: this is what searchers are trying to find, through acoustic events or pings, the black box. in air, sound travels in a straight line. but it's not like that in the sea. it can angle and bend, up to 90 degrees. that means you can't be exactly sure where the sound is coming from. >> acoustic energy, sound through the water, is greatly affected by time, pressure, and salinity. >> reporter: if "ocean shield" hear hears another ping and is able to fix the position, it will put blue fin 21 into the water and attempt to find w

jean casarez, cnn, new york. >>> so what else should be, could be done for these families? ocean search spermist are and vice president at williamson and associates. tom fuentes, cnn law enforcement analyst and also panel member from teledyne. a list sent to the airlines asking for among other things, airplane logs, maintenance history records. is there anything wrong with giving them what they're asking for? tom, you first. >> i don't know if it's wrong, but i can pretty well predict they're not going to get any of it, or very little of it. the malaysians have said that it's part of their investigation. they refuse to give any information that relates to the investigation. so i don't think seal say any of it. >> traditionally, that kind of information would not be handed over to victims, victims families, et cetera. thomas, in your view, is this the exception? is this the case when authorities feel they've got to give these family members something, and maybe meet some of these demands? >> it's hard for me to tell that. this is a very hard situation. right? you've got a po

jean casarez following the attack since it happened this morning.high school. three of the students are going to be staying in intensive care tonight, going to be monitored all night and those are the three victims that went into surgery. now 11 victims were taken originally to the university of pittsburgh medical center hospitals, and that would be four hospitals. we've heard some particulars about one, a 17-year-old, that a doctor at children's hospital described as receiving a stab wound to the left part of his lower torso, which seemed to be a pattern here, and that stab wound perforated his liver, major blood vessels. the doctor said the only reason he lived is that the knife did not go through his heart or aorta. he's currently on life support but they believe he will survive. >> and as they are struggling to do so, there are some stories emerging, this school resources officer who, did he slap handcuffs on the suspect? >> he is the one that apparently actually apprehended him but the security guard was finishing his overnight duties just abou

. >> jean casarez, new york. >> all right, jean, we appreciate it. 102 years ago later, what happenedo the titanic still fast natuominatature -- fast na people worldwide. he was part of the team that found the titanic at the bottom of the atlantic. thank you for joining us, do you think the search is being done in the right manner? >> thank you for inviting me first, don, yes, i think so. titanic didn't have a pinger on it that we could listen and be guaranteed within a few miles of the wreck in order to know where it was. and given the fact this is sort of a standard search procedure that the u.s. navy uses for its military planes and things like that i really can't see any other options. >> so do you think they're searching in the right area, jules? >> well, if they heard the pinger, i mean, the answer is yes. i mean, i spent a bit of time looking into the specifications of the manufacturer of the pinger. and they say well, you can hear us within two miles. and we go to the manufacturer of the towed pinger locater, you realize you're within two miles of that. you have to be within a

. >> that was jean casarez reporting. i'm joined by sylvia earl oceanographer. spoke earlier and i want to ask you again, have you ever seen this kind of focus from officials and the general public on the deep sea and the ocean floor? >> well, certain other events come to mind such as the sinking of the titanic and the ultimate discovery and knowledge that came from it. you know, the titanic is a little bit less deep than where this aircraft is thought to go down. two and a half miles the average depth of the ocean. two and a half miles is not great in if any other direction but in the ocean it's still you know, less is known about that than the -- than what we know of other parts of the solar system. >> and you know, that was 1912 when it sank. it is 102 years ago tonight. it went down in 1912. and the wreckage was found in 1985. it took some time. the technology is better. but here's my question, compared to other ocean areas, how much do we know about the depth and complexity of the southern indian ocean? >> only about 5% of the ocean has been mapped with the

jean casarez joins us with a loot haek ahead to phase two. >> reporter: carol, so many challenges wedeal with as we watch the explorers and the oceanographers and searchers. one of those are the naturally occurring things that are under the mysterious deep, dark sea. >> now, i stress this is very deep water. >> reporter: very deep, and very mysterious. search vehicles may have to travel 2.5 miles down to try and find aircraft wreckage, and much about the ocean floor is unknown. >> it is a mystery. it's very -- we know it's deep. it's 4500 meters. >> reporter: kristine dennison is an ocean explorer who says what adds to the mystery is the terrain. >> you have valleys. you have gullies. you have mountain ranges. it's very much an area as it will miami mic what we have top side. >> reporter: they're trying to find acoustic pings, the black box. in air sound travels in a straight line, but it's not like that in the sea. it can angle and bend up to 90 degrees. that means you can't be exactly sure where the sound is coming from. >> acoustic energy sound through the water is greatly affecte

. >> reporter: jean casarez, cnn, new york. >>> the death toll for the sunken ship in south kor

jean casarez is joining me now with more on why this case is so complicated. has started to play out. it is so complicated emotionally. it is also complicated legally. you have lost someone you are very close to. in the blink of an eye, they are gone. a lawyer comes up to you. i can launch an investigation. the lawyer says, i'll only take one-third of any moneys you roux he cover. the images are heart wrenching. families of the missing slowly coming to terms with what is beginning to seem inevitable. >> we must now accept the fateful reality that the aircraft is now lost. there is also another group on sight waiting anxiously, the lawyers, ready to scoop up clients and begin the long battle for financial compensation. >> reporter: right now, in malaysia, in china, the families are being misled by some very unethical u.s. lawyers. >> reporter: attorney justin green has tried aviation cases for multiple years. he is aware of multiple law firms that are in malaysia soliciting families earlier than united states and ethical rules would permit. >> these lawyers lau

. >> that was jean casarez reporting.ylvia earl, with the national geographic society. we spoke earlier, and i want to ask you again, in your experience, have you ever seen this kind of focus, both from officials and the general public on the deep sea and the ocean floor? >> well, certain other events come to mind, such as the sinking of the titanic and the ultimate discovery and knowledge that came from it. that, you know, the titanic is a little bit less deep than where this aircraft is thought to go down. two and a half-miles. the average depth of the ocean. huh, you know, two and a half-miles is not great in any other direction going up or this way, but in the ocean, it's still, you know, less is known about that than, than what we know of other parts of the solar system. >> mm-hm. you know, that was 1912 when it sanction. and it's 102 years ago tonight. it hit the iceberg when it sanction. it went down in 1912. i think the wreckage was found in 1985. so it took some time, obviously the technology is better. but here'

jean casarez, cnn, new york. >> so now we understand that while they're searching for the plane downere's other things they'll have to discover. we'll be giving you that as we follow it along ourselves. let's take a kwik break. when we come back, we'll take you live to boston. i saw this red, blistery, rash and i felt this horrible pain on one side of my back. i had 16 magic shows to do. i didn't know how i was going to be able to do these shows with this kind of pain that i was in. i told my wife what i had. she went on the internet and said "i think you have shingles." i could feel the shock in my back and it was like "wow its got to get better than this or i'm in big trouble." >>> all right, we're following the latest developments in the search for flight 370. we want to get to brian todd. we have word that the search has re resumed. now we're hearing they're back in the water with the submarine. >> that's right, chris, got a e-mail a short time ago. phoenix is the company which owns and operates the bluefin-21. phoenix has nine operators aboard the shield which is running that ve

. >> reporter: jean casarez, cnn, new york. >>> the death toll for the sunken ship in south korea stands at 36. 266 still missing. the captain and two crew members now face multiple criminal charges. a live report is just ahead from jindo, south korea, where families are holding vigil for their loved ones. and the challenges facing the rescue divers as they look for victims there. >>> a western official tells cnn u.s. troops will be training in eastern europe. a company of 150 troops will northbound poland and another company headed to estonia and exercises take place in the coming weeks as part of an ongoing operation and comes two days into an international pact to ease tensions in ukraine but so far no indication of any progress on the ground. prorussian sprastiseparatists a refuse to go leave the buildings and lay down their weapons. 40,000 russian troops are across border in ukraine and putin says they are needed because of ukraine's political instability. this is the first time russia has said that deployment was for anything other than for military exercises. we want to get the la

our jean casarez is here with us. she's an attorney. and jean, you know, we heard the families are now going to approach boeing and ask some of these questions to boeing, a publicly traded company. is boeing legally required to give some answers? >> no, no. and i don't think they will. it really puts them in a tough position. you know, we've got the emotional aspect. we've also got the investigation aspect and the legal aspect to all of this. if you've noticed, there have been no suits filed against boeing because there is no information. there's no evidence at all. so there's not a basis to form a claim to sue. but that information could form the basis for a claim to sue, right? and so boeing's not going to give it out. furthermore, we heard yesterday they are putting together in malaysia an independent investigation team. they're going to look at maintenance records. they're going to look at aspects of the plane itself and even the human factor, the psychology, the medical aspect. so i think what boeing will probably say is that it's p

. >> reporter: jean casarez, cnn. >> all right. thank you very much. >>> time for my team of experts. jeff wise, author of "extreme fear: the science of your mind and danger." former faa safety inspector and author of "why planes crash." lieutenant colonel michael kaye, retired military pilot with the british royal air force. jim tillman, retired american airlines pilot, aviation attorney arthur rosenburg, and of course jeffrey thomas, back with us from perth. david, you say in jean's piece that additional countries coming forward to help could complicate efforts. what's the alternative, though? >> well, the idea is that as time -- there's a time in investigation when you stop doing and start thinking. that's important, really important. and most of the my investigations, i spent at least 80% of our time planning and figuring it out and analyzing data. and only about 20% do you actually go out and do. now, those investigations didn't involve this type of search, obviously. but with this type of search, it's so important that it's a

. >> reporter: jean casarez, conditicnn. >> joining me is -- who worked with families of flight 447. hello. steven at this stage over a month and a half in to the search, would you recommend that family members start to retain attorneys? there z there a benefit to them doing so? maybe it is buffer between them and the people they are dealing with? >> for some families it makes them feel they have some power. they are frustrated and not getting answers. the families have have been approached within days of the crash, those attorneys people should be suspect of. they need to find people who have handled these kind of cases in the past and they are not knocking on their door. in the 45-day period that you talked about under the familiarcy assistance act applies to crashes in the united states as to u.s. attorneys. there's some question as to whether it applies overseas. we know in this case there have been lawyers in china days of the crash trying to solicit cases which in the united states would be barred. instead of doing that, the attorneys who are contacted by the victims know what