down, investigators must first map the terrain. a step that takes time and requires patience. if it s in rocky or cav very nous terrain, it could be challenging. once the wreckage is identified, these vehicles and the operators have extraordinary capability. locating them is one thing, but pulling the black boxes from the incredible depths is another. the remote controlled vehicles, armed with sonar, cameras, lighting and remote control arms may sift through silt and potentially through wreckage in pitch dark waters. it can be painstaking. it can be very difficult. sometimes the boxes have separated from the wreckage. sometimes the boxes have separated from their pingers. so this is going to being a long process. george howell, cnn, chicago. joining me now, less aben, a
said after he was apprehended said i wanted to die. the lawyer for mr. hribel had this to say about his client. typically a young kid. b-plus student. the family is like ozzie and harriet. they have dinner together every night. they did not see this coming. reporter: there are candlelight vigils and prayer vigils as some of the students knew about hribal, said he was bullied by some students. that will come under investigation. he is being held under no bail and tried as an adult. eric, back to you. sad and tragic but there are inspiring stories of brave heroism. steve centanni. thank you very much. jenna: we have more results from the malaysian flight 370. discovery could indicate searches are closer to finding wreckage. we ll tell you about that. urgent manhunt. police issue a warrant for a
success of flight 370 but we can be certain that we will spare no effort, that we will not rest until we have done everything we humanly can. reporter: the search zone remains vast, about 86,000 square miles of deep sea. i can promise them that we will not give up. reporter: in kuala lumpur, the last scheduled daily briefing is monday. it s unclear how long the search can go on without finding wreckage. but there is a deadline. the pingers on the plane s recorders are required to last 30 days, designed to last 35. key equipment to find them is arriving on board australia s ship the ocean shield but it won t be used until debris is found. the pinger manufacture says that it was due for an overhaul but never returned for the fix.
operations. both vowing to keep looking. but a distinct shift in australia s tone suggests hope the plane may be found may be evaporating. we cannot be certain of ultimate success in the search for mh-370, but we can be certain that we ll share no effort, that we will not rest until we have done everything we humanly can. reporter: the search zone remains vast, about 86,000 square miles of deep sea. i can t promise them that we will not give up. reporter: in kuala lumpur, the last scheduled daily media briefing is monday. it s unclear how long this search can go on without finding wreckage, but there is a deadline. the pingers on the plane s recorders are required to last 30 days, designed to last 35. key equipment to find them is arriving on board australia s ship the ocean shield, but it
and that means finding wreckage. as of now, they still haven t found anything that s anything to do with flight mh flight 370. the prime minister of malaysia was also briefed by those running the search operation here. angus houston, the australian in charge told him that the search was going on, there s no timetable behind it. but he also warned that and this is the first hint of perhaps a slight change of strategy, that if they continue to find nothing, then a new approach might be needed. back to you guys. nbc s ian williams in perth, thanks so much. with us now is dr. allen deale, a former ntsb investigator and the author of air safety investigators using science to save lives one crash at a time. your book is dedicated to the families of previous plane crash victims and you write, ye shall know the truth and the truth shall make you angry. we ve certainly seen anger and confusion among the flight 370