cnn's brian todd joins us now from washington with more. ell us about this, brian. >> well, don, the capability out there is really two vehicles in question. the towed pinger locator that we've heard so much over the past couple of days which apparently located these signals, and also the bluefin 21, which is an autonomous underwater vehicle. they're both made by phoenix international. and we got access to phoenix's facilities here not far from d.c. near largo, maryland. that's their headquarters. that's where they made all of this very sophisticated equipment. the way it works is the towed pinger locator goes down and sweeps that area first. the towed pinger locator can go down as far as 20,000 feet below the surface of the sea. it can detect the pinger from up to two miles away, even if it is fading. these developments overnight and mid day in the region are very encouraging. of course, we know it does not necessarily mean that they have found the black box, but it is encouraging. the next step now that they have gotten the signals is to s

our own brian todd is just outside washington, d.c. with a closer look at orion. than the bluefin-21. brian, tell us what you can about the orion. >> reporter: well, wolf, this is the orion right now. it's towed on cables like this. it can scan the ocean floor about three-quarters of a mile in each direction and go much deeper than the bluefin can go. many analysts believe if the bluefin can't find wreckage of the missing plane, this could be the next vehicle in the water. the bluefin-21 has scoured the search area, pushed the limits of its depth capability, and so far found nothing, but the ocean floor is deeper in some places than the bluefin can go and this may be the next best option. >> this is the orion system, the towed side scan sonar system. >> reporter: we got a look at phoenix international. the search team. the u.s. navy owns the orion. phoenix runs and maintains it. the project manager showed us the orion and the curve, a remotely operated vehicle that can recover wreckage. the orion can go deeper, can stay down much longer, days or weeks at a time, u

joining me now is paul ginsburg, les abend and brian todd on the phone. i want to get to you about the bluefin-21. you have visited the folks who are in charge of that technology and what do they tell you about searching the ocean floor with this particular apparatus? >> they bought it from the company bluefin which made it and what they've told us about this is that it has a lot of high-tech capability, it's multidimensional, it can go down to the depth of the ocean floor in that area, about 14,700-plus feet down. it can make it down to that depth. it does side scan sonar and also can take high-resolution pictures and can take a full mosaic of the ocean floor at those depths. it essentially acts as an underwater drone. it can go around and take high-resolution pictures as well as a side scan sonar image of the ocean floor at these depths. what you heard angus houston say is that this the last hope of finding out what is down there. the towed pinger locator has done all that it can do. this is the next logical step and this is what they are doing with it

brian todd, cnn, largo, maryland. >>> all right. we get from brian's piece is it is an impressive piece of equipment, this bluefin, but the task is just as great as the capabilities of the equipment. because it has never been mapped, this part of the ocean floor, before. we have to expect some delays and problems. we have to take a break right now. the bottom of the indian ocean is a mystery , it is unmapped. we'll explain it coming up. [ ship horn blows ] no, no, no! stop! humans. one day we're coming up with the theory of relativity, the next... not so much. but that's okay -- you're covered with great ideas like optional better car replacement from liberty mutual insurance. total your car and we give you the money to buy one a model year newer. learn about it at libertymutual.com. liberty mutual insurance. responsibility. what's your policy? if yand you're talking toevere rheuyour rheumatologistike me, about a biologic... this is humira. this is humira helping to relieve my pain. this is humira helping me lay the groundwork. this

our own brian todd is hunkered down in birmingham, alabama. what's the latest there, brian?orter: wolf, we are directly in the track of storms that just hit northeastern mississippi. it's moving into alabama. already moved into alabama. here in birmingham, the weather's getting worse, trees are starting to blow here, light skies behind me. in contrast, streets are almost abandoned. skies getting darker here and darker still to the north as this storm moves to the northeast of us, sweeping past the birmingham area, probably within the next few minutes. one official with the national weather service told me some of these storms could be long-track tornados, meaning they could be on the ground 30 minutes or longer. people here in birmingham are told get off the streets, hunker down. if you live in a manufactured home, get out of it, get to sturdy shelter. the streets here, not many people moving around. and those who do are advised to get inside pretty soon. as you can see, the wind is starting to kick up here. we're feeling some rain a little bit. a tornado warning just north

they didn't have that this time, but they got fortunate maybe, maybe. >> brian todd, many thanks. i want to bring in thomas altshuler, the vice president of teledyne marine systems, the manufacturer of the equipment the chinese used. first i want to talk about the pinger detector on the ocean shield. officials say it will take days to confirm if the signals came from the black boxes. why is that? >> well, they want to go through and do several passes over the target they've seen and understand the signal that's come back. there are naturally occurring and there are other types of systems that emit at the same frequency. so verification and basically locating a smaller area where that pinger might be will allow the bluefin 21 to be more efficient when it goes and starts to map using the side scan sonar. >> commander william marks says the "ocean shield" with that pinger locater on board, it picked up a signal that was strong and faded away as the ship moved away, right? that would mean that the block boxes are in one place and the signal would be louder and as you move away it woul

>> brian todd, thank you so much.ard due wous this work is, how much longer can they keep up the intensity? let's bring back our panel. rob, mary, van, how do you keep the searchers motivated and encouraging and fresh? i wonder, captain gurley, how do you keep them motivated? >> well, these are professionals and this is the kind of job they love to be able to solve for us all. i was on submarines using technology and you rotate folks through. every couple of half hour or so that you don't have somebody sort of zone out on the stack. you've got to stay fresh and alert because you never know when those signals will pop into the headphones. >> mary, we're talking about day 38, though. it seems like that sounds simple maybe when you have a couple of weeks or a couple of days and now you're talking day 38. is there going to be a concern or worry that you have to find more personnel to swap out, to change these schedules? >> well, i think that is true and there are also some hints about what is coming next when united state

>> brian todd, thanks very much. brian working that story.cial coverage of the mystery of flight 370. finally malaysian officials are on the record confirming this is a criminal investigation. we expect the air search to resume momentarily. we're going thrive australia. the planes, they're getting ready to take off again. ♪ [ male announcer ] when fixed income experts... ♪ ...work with equity experts... ♪ ...who work with regional experts... ♪ ...who work with portfolio management experts, that's when expertise happens. mfs. because there is no expertise without collaboration. mfs. those little cialis tadalafil for daily use helps you be ready anytime the moment is right. cialis is also the only daily ed tablet approved to treat symptoms of bph, like needing to go frequently. tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex. do not take cialis if you take nitrates for chest pain, as it may cause an unsafe drop in blood pressure. do not drink alcohol in excess. side effects may i

brian todd, cnn, shan till hi, virginia. >>> let's see how the markets are doing today. there you see the dow jones, up about 106 points. mergers in the pharmaceutical sector sparked trading this morning. also, earnings season is now in full swing. wall street so far has liked what it's seen. dow jones up at least today. >>> that's it for me. thanks very much for watching. i'll be wack, a special two-hour "situation room" later today 5:00 p.m. eastern. newsroom with brooke baldwin newsroom with brooke baldwin starts right now. -- captions by vitac -- www.vitac.com sdplrkts great to be back here in the studio with you. i'm brooke baldwin. top of the hour, the death toll keeps ticking grimly upward divers bring bodies to the surface. a total of nine crew members are facing charges, including the ferry's captain. when asked about the ferry's lifeboats, crew members said it was hard to get them as the ship rolled over, and began to sink. that's what the crew says. today divers finally reached the ferry's cafeteria. because the ferry sank in the morning, many of those passeng

our brian todd got some rare access to the company that deployed those.us with are mmore. tell us what you have learned. >> no one knows their names. they spend hours in an isolated space in the middle of the indian ocean often staring at silence. they may have the most important jobs in the entire search effort. the hopes of finding the black boxes for malaysia airline flight 370 day and night there is no break. they are pretty much on all the time and what they do is so important to us. >> we went behind the scenes at phoenix international, the company that made the towed pinger locator. sonar techs are tasked with listening and listening some more. >> you will spend days listening to nothing and then you may hear a chiropractor but you don't hear another one. so until you can duplicate it and run it back at different angles, only there are you positive that you have it. >> reporter: even then, experts say that sounds in the ocean can play tricks on your ears. >> several people can look at a signal and see different things because all they are recording

they're thinking about doing that now. >> brian todd, thank you. >>> ukraine's government seems to betern ukrainian towns. pro-russian separatists are taking over military vehicles, they're planting russian flags on them. should the u.s. be worried? what can the u.s. do, if anything? our military analyst stand , by. >>> in ukraine, tensions are high right now. pro-russian militants and the army are facing off in towns in the eastern part of the country. this is a map where the uprisings are taking place up and down eastern ukraine. all about 100 miles or so from where thousands of russian troops have massed on the russian side of the border. these are scenes today from near cremetoresk. locals blocking a convoy of paratroopers acting on orders from kiev, the ukrainian capital. it appears standoffs like these aren't ending any time soon. let's bring in retired u.s. army major general spider mark, a cnn military analyst. it looks like the situation is getting more tense. the question is what, if anything, can or the u.s. military be doing about this? >> first of all, i think the united

brian todd, cnn, washington. >>> we'll cross back to kuala lumpur, where u.s.nt barack obama is set to arrive in moments to an elaborate welcoming ceremony there for him. this is the third of four stops on his tour of asia. we'll keep our eyes fixed here, bring you details as soon as they become available and bring you other stories after this short break. stay with cnn. >>> welcome back, everyone. u.s. president barack obama has arrived in cowl la lump-- cull lumpur to an elaborate celebration. this is taking place in cukuala lumpur. malaysia says a parliamentary democracy with a constitutional monarch, some of his stops on this agenda include visits with the prime minister, a visit to the national mosque and a town hall meeting with young people. our will ripley is watching this as well from kuala lumpur as u.s. president makes an historic visit. will, what kind of relationship is the u.s. trying to foster here? because as we've seen through the search for mh 370, malaysia is not a government that's used to transparency, let's say. this is still a country tha

brian todd is joining us with a drone searchers and operators who run this.very difficult job for that vehicle but they say it's very much up to the task. its manufacturer calls it bluefin-21. for the people who run it, it's -- >> basically a smart torpedo. >> reporter: and right now it may be the best remaining hope for finding wreckage from malaysia airlines flight 370. we were given exclusive access behind the scenes at phoenix international, the company that runs the bluefin, to see just how it works. while it may launch from the side of the a search ship, the bluefin is operated by remote control with help from a satellite. its job, not to listen for pings but to map the ocean floor and look for debris. to do that, it can use two different payloads which have to be swapped out. >> this particular payload section is the acoustic section. >> reporter: first, the bluefin uses side scan sonar and an echo sounder, it detects sound waves off the ocean floor that are not natural. if those are picked up, the bluefin can be brought to the surface. the sonar techn

brian todd is here with more on what went wrong. what are you finding out? the operation. they say the bluefin had been calibrated to go to a certain depth. it's not clear why but the vehicle started to move towards a lower depth and at that point it took itself out of the mission. a source close to the operation tells cnn, the bluefin-21 is back in the water, searching for possible debris in the same place it was looking monday night. the source says the underwater drone is operating at about the same depth as its first mission, even though in that first operation it overextended. >> the one condition that causes it to abort its dive is if it reaches its operating depth of 4500 meters. and that's what happened in this case. >> reporter: the bluefin was programmed to go a certain depth but it fell slightly below that level, down towards 2.8 miles below the surface. that's its maximum depth. it's unclear why it went so low but when it did, its safety mechanisms kicked in and brought itself up to the surface, 7 1/2 hours in to a 20 1/2 hour dive. that's part o

>>> brian todd high above the tornado damage in alabama. >> i'm brian todd flying over the worst hitreas in alabama, devastated by the recent round of tornadoes. we'll give you a unique perspective from the air, just ahead. really... so our business can be on at&t's network for $175 dollars a month? yup. all five of you for $175. our clients need a lot of attention. there's unlimited talk and text. we're working deals all day. you get 10 gigabytes of data to share. what about expansion potential? add a line anytime for 15 bucks a month. low dues... great terms... let's close. new at&t mobile share value plans. our best value plans ever for business. >>> new controversy erupting in the search for malaysia airlines flight 370. despite skepticism from expert worldwide, officials of an australian company standing by their claim of detecting plane wreckage from the bay of bengal. they aren't saying it's the missing jet, they are urging officials to take a closer look. cnn's anna coren reports. >> reporter: as the search continues for mh370 in the waters of the southern indian ocean more t

brian todd is here with more on this part of the story.usly, there are great limits to what this high-tech underwater equipment can do since they're not even sure they're looking in the right place. >> that's right, wolf. this equipment is very impressive. this towed pinger locater can go 20,000 feet below the surface, can detect the pinger from two miles away, but does have its limitations. still, here's what the chief search coordinator, air marshal angus houston said a few hours ago about the pinger locater. >> using the towed pinger locater from the united states navy, on australian defense vessel "ocean shield," and a similar capability on "hmsecho" the two ships will search a 240 kilometer track, converging on each other. >> brian, i'm going to interrupt your report for a moment. i want to go to ft. hood, texas. the governor of texas, rick perry, is there. let's listen. >> a very thoughtful time that they allowed us to have, briefed us on the events. and also went by darnel to visit with some of the wounded. the families that were th

brian todd, cnn, washington. >>> and now to the latest on the search for the missing malaysian airlinerthe bluefin 21 underwater vehicle is now on its fifth mission to the indian ocean floor looking for the airplane. over six weeks, the air and sea search, as you know, has turned up no clues to the plane's whereabouts. repeated failures could lead to a new search zone as we hear from tom foreman. >> reporter: it's fine for searchers to talk about having a plan b, but we've heard a lot of plans since this plane went missing. just look over the past month how many search areas have constituted the plan of the time. all of these out here. this represents hundreds of thousands of square miles, even as if of them have overlapped, each one in its time to best plan they had. and now it's focused right here. this is where the bluefin has been working right up in this area. only covering a few dozen miles on the bottom of the ocean there, against very difficult conditions. this is where the visual search is happening with planes and boats on the surface. this is the best they have. this is where

but as brian todd tells us, the bluefin-21 may not be the best option out there. >> reporter: sourcesoperation tell cnn the latest glitch with the bluefin-21 was minor. low oil pressure in a chamber that protects part of the bluefin-21's electronics. they say it was quickly fixed and the bluefin was sent back down. but it still cost about five hours of search time. on monday, the bluefin cut short a mission on its own when it started to go beyond range. that time, it finished its search. >> it is troubling when we have all of our eggs in one basket and that basket is operating at the very edge of the parameters. >> reporter: that leads people to question why the bluefin is the only device searching in the indian ocean. there are more suitable vehicles with better depth capability. the remus 6,000 can go deeper, and the u.s. navy has those but says they are deployed on missions and are not available. there is also the orion, a towed vehicle that has side scan sonar. it can go deeper than the bluefin. the only problem? it is sitting in a warehouse in maryland, not put together. >> it ha

the tsa is assisting the airport in its investigation. >> so that was brian todd. exactly how did this young man do it? let's take a look now at gary tuchman. he's going to show us exactly how. gary? >> this is southern california aviation airport in victorville, california, in the desert. we're going to demonstrate to you how someone would get in a wheel well of an aircraft. this is a boeing 767 that used to be used. this is the door that was closed. we'll show you how the process would start. someone who wanted to get in the wheel well would get on the tire, step on the bars right here, climb all the way to the top right here, and this right here is where an opening would be to climb into the landing gear wheel well. once someone would climb into that hole, they'd end up here. i'm going to show you what happens after they climb through the hole. i get in this area. this is the wheel well area, and we're told there's only one place to sit where you could possibly survive, because when the wheels move in, the two huge wheels, they come right here. there's no room e

brian todd has more on the mystery woman who is a hero. >> reporter: ivan lopez opened fire and then used his weapon, again, shooting from a xar. he then walked into a battalion transportation building and then fired, again, and then moved to a parking lot. his destruction, while terrifying could have been so much worse, if it had not been for one female. >> she performed her duty exceptionally well. >> reporter: officials will not release her name, but former soldiers at ft. hood tell us she's likely with the 720th mp battalion. the base commander said she arrived in the parking lot four minutes after the first 911 call. he says lopez approached her from 20 feet away, put her hands up and then reached under his jacket and pulled out his gun. >> she saw that and interpreted that as a threat and then engaged him with small arms fire, at which time then the shooter did a self-inflicted gunshot wound. >> most police officers would have stepped back and waited for backup but she stepped forward. >> reporter: philip carter was responsible for patrols on base. carter believes she was patro

brian todd has more. >> reporter: the black boxes from flight 370 are as elusive as its wreckage.nside, the cockpit voice and flight data recorders that could unlock this mystery. now, new momentum for the idea of having to avoid uncovering black boxes. cnn has learned malaysian authorities have recommended to international regulators that commercial aircraft should be tracked in real-time. is it time for that? are these obsolete? >> i feel there's few people in the world after the malaysian air crash who wouldn't say yes. clearli, this is old technology. >> reporter: now, the ntsb is reviewing new technology for airliner to live stream flight data back to the ground as they fly. one challenge the ntsb sees -- too many planes transmitting too much information. >> you only can have so much bandwidth, so much ability to receive data, transmit data, so you're looking for what is the most important information. >> reporter: two canadian companies have already developed real-time streaming that bounces off satellites. the hardware looks like this as it's installed in the plane. as the

>> brian todd reporting for us. thanks. let's get more from oceanographer van gurley.arch for the black boxes, they found debris after five days but then two days it took them to find the black boxes. but they have a much bigger area than presumably they are looking at right now. >> you're right. that was a two-year effort and that wasn't two years on the water. that was about 20 weeks on the water because of logistics to look at a 5,000 square-mile area. based on the very positive returns that were heard over the weekend by the "ocean shield" team and the phoenix international experts, they have to be within three to four miles of the location of something on the bottom that is manmade and the only thing that really should be down there at this point would be the pingers. so if you're looking at something, even conservatively, you're talking about 75 square miles, which they already have narrowed it down to. that makes this a very trackable problem. >> in the air france disaster, they never heard any pings to begin with. at least now they believe they heard two hours

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cnn's brian todd live in washington with that part of the story.> reporter: good morning, carol. the ocean depths are very intimidating. the titanic was down about 12,500 feet below the surface of the ocean. it took search teams more than seven decades to find that. these signals coming from the ocean floor, if they are on the floor of the ocean are about 14,700 feet down. that's almost three miles down. as you mentioned, the ocean floor itself is complicated in that area. it's not charted all that well. what we do know from oceanographers is there is a flat plain at the bottom of the ocean surrounded by mountain ridges, and also the possibility because of the mountain ranges down there that audio signals could bounce off certain mountains or hills down there and maybe throw up some confusing signals as far as the possible location of the plane. that's another thing they'll have to deal with if they get down that far and find something tangible. also the silt in that area is considerable and it is apparently very kind of -- it's porous and moves ar

brian todd is on the scene for us. what's going on over there, brian?they are bracing for more storms here and we can illustrate some of the danger, some of the dangerous and dark storm cell clouds building here for the first time today here near athens, alabama. officials here talking about all sorts of dangers that residents face, not only from the storms today, but just coming back to these areas and trying to pick through the rubble of their homes. they have gas leaks reported in these areas and those are very dangerous because of the obvious factor of, you know, when you poke around these areas and going through wreckage, you're not going to detect a gas leak right away, it may present a danger later. also downed power lines. the sheriff of this county told me there are a lot of downed power lines still in this county. it's very easy to stumble upon them in these areas and possibly hurt yourself. another big danger, and this is one we can attest to for our crew here, look at this, this 2x4, a lot of nails sticking up out of boards and planks in thi

i want to go to brian todd. brian -- actually instead i want to go evan perez. evan. >> reporter: that's right. we are told that at least one, there was at least one shooter. there have been reports there was a second shooter but we're being warned by authorities that we've been talking to that it is possible people are mistaken a second person perhaps a first responder as a second shooter. so we've been caused that may or may not be accurate. we're for certain there is at least one shooter and at this point that person was believed shot. we don't know whether or not that was self-inflicted or not. there are multiple injuries at the scene. we're still trying to determine as to how many of those there are and how serious those are, erin, but at this point it's going to take several hours for authorities to get into those buildings. it's a very large base as you know. it is something that's going to take some time before authorities can clear, can get everybody out safely and determine there's no other threats anywhere else on the base. something that will take se

you may see that in the days ahead. >> brian todd reporting live for us from washington. >> 21 peopleer: good morning carole. i am indeed in murraysville, pennsylvania where we are learning more about that tou troubled young man. a body at rest tends to stay at rest... while a body in motion tends to stay in motion. staying active can ease arthritis symptoms. but if you have arthritis, this can be difficult. prescription celebrex can help relieve arthritis pain, and improve daily physical function so moving is easier. because just one 200mg celebrex a day can provide 24 hour relief for many with arthritis pain. and it's not a narcotic you and your doctor should balance the benefits with the risks. all prescription nsaids, like celebrex, ibuprofen, naproxen and meloxicam have the same cardiovascular warning. they all may increase the chance of heart attack or stroke, which can lead to death. thischance increases if you have heart disease or risk factors such as high blood pressure or when nsaids are taken for long periods. nsaids, like celebrex, increase the chance of serious skin or a

brian todd is here. he's got new information. brian? >> wolf, the families say this preliminary report to be released next week should have been shared with them already. they've gotten no explanation why it hasn't been and the families now say they are going to look for answers elsewhere. a new round of resentment over the malaysian government's handling of this investigation. the prime minister promises that the preliminary report on night 370's disappearance will be released next week but it's been se sent to some authorities. for the families, it's another bitter turn. >> they seem to be choosing to treat us as if we are the enemy as opposed to an interested party in helping to solve this mystery. >> reporter: sarah bajc says families will receive answers from a company shareholder meeting next week and even if they get in, the families may not get much information. >> boeing can only talk to the ntsb. the protocol of the investigation prohibits anybody but the malaysians from doing anything that they want to the families and to the

let's get more on that from brian todd. >> there's really two vehicles in question, the towed pinger locator that we've heard so much about that apparently located these signals, and also the bluefin 21, which is an autonomous underwater vehicle, both made by phoenix international, and we got access to phoenix's facilities here not far from d.c., near largo, maryland. that's their headquarters. that's where they made all of this very sophisticated equipment. the way it works that the towed pinger locator goes down and sweeps that area first. the towed pinger locator can go down as far as 20,000 feet below the surface of the sea. it can detect the pinger from up to 2 miles away. it can detect the pinger even if the pinger's signal is fading. so, these developments overnight and midday there in the region are very encouraging. of course, we know it does not necessarily mean that they've found the black box signal, but it is encouraging. now, the next step, now that they've gotten these signals, is to send that autonomous underwater vehicle, the bluefin 21, down to that area where the s

birmingham the storm devastated the town of athens, in the bull's eye of the storm where cnn's brian todd is this morning. good morning, brian. >> reporter: good morning, carol. as the sun has come up here just west of athens, people are just starting to arrive in this neighborhood and pick through the rubble and see what they've lost. and it is devastating. the tornado just slammed through this neighborhood. this is formerly a complex of houses and duplex apartments and then look what's left of it. complete devastation behind me. officials had told people that were in manufactured housing, lighter materials, to get out. most seem to have heeded the warnings. as this neighborhood will show you, even if you had a house with solid framings and solid structure and some foundation it didn't matter. this house seems to be of that quality and it just got blown off its foundation. there are appliances strewn all over the place here and people are not quite out of danger yet. officials are warning last night the police chief of athens told me, people coming back to these areas have to be very car

i want to bring in cnn's brian todd right now.been doing a lot of reporting on this bluefin-21. i guess the more complicated the technology, the more expensive it is to run it, right? >> it certainly is, carol. these are not cheap machines, vehicles to run. none of this is cheap. we got a little more of a breakdown of what it costs for one specific part of this operation, that's the part we've been talking about, the deployment of the bluefin-21, the autonomous under water vehicle being counted on to map the ocean floor for possible debr debris. according to christopher johnson, just for the u.s. navy's allocation for this particular part of the operation, they've budgeted $3.6 million for their part of this operation. that covers the deployment of the towed pinger locater which was previously used in the past few days, the deployment of the bluefin-21 over the past three days, ten operators on board the "ocean shield" and transportation for those operators and presumably the equipment to the region and back to the u.s. that's jus

brian todd got a unique look at the bluefin 21. hi, brian. >> reporter: hi, carol.phisticated underwater vehicle designed to take a mosaic of the ocean floor and map it for debris. also why it didn't quite live up to the job on its first deployment. that's just ahead. c'mon, you want heartburn? when your favorite food starts a fight, fight back fast, with tums. heartburn relief that neutralizes acid on contact. and goes to work in seconds. ♪ tum, tum tum tum... tums! at your ford dealer think? they think about tires. and what they've been through lately. polar vortexes, road construction, and gaping potholes. so with all that behind you, you might want to make sure you're safe and in control. ford technicians are ready to find the right tires for your vehicle. get up to $120 in mail-in rebates on four select tires when you use the ford service credit card at the big tire event. see what the ford experts think about your tires. at your ford dealer. help keep teeth clean and breath fresh. with beneful healthy smile snacks. with soft meaty centers and teeth cleaning te

brian todd joins me from washington to tell us more about this. good morning, brian?good morning, carol. we can stream movies on our laptops. we can stream music instantly on our phones, but the live streaming of data is only used on a few commercial airliners, and some key players in this case might have just injected new momentum in the push to change all of that. >> the black boxes from flight 370 are as illusive as its wreckage. inside the cockpit voice and flight data recorders that can unlock this mystery. cnn has earned malaysian authorities have recommended to international regulators that commercial aircraft should be tracked in realtime. >> is it time for that? are these obsolete? >> i feel there's few people in the world today after the malaysian air crash who wouldn't say yes. clearly this is old technology. >> reporter: now the ntsb is reviewing new technical to live stream data back to the ground as they fly. one challenge, too many planes transmitting too much information. >> you only can have so much bandwidth, so much ability to receive data, transmit

brian todd is joining us. he's got details on what is going on. brian?heard the phrase cautious optimism and their next steps are so crucial to making the most out of these detections. they've got to move fast to find those signals again and with the batteries in the black box pinger almost dead, they certainly don't have much time. it had a tough job from the get-go. no wreckage from the plane. searching in waters so rough and so deep. but the towed pinger locator has detected signals in the indian ocean consistent with pings from black boxes. >> this would be called miraculous. this has come down from hundreds and thousands of square kilometers. >> two separate signals have been detected. what happens next? officials say they have to reacquire those signals. that means the pinger locator has to make other passes, first at least three runs parallel to those it made when it first detected the signal. then, perpendicular runs so they can isolate the source and triangulate its position. experts caution it's full of sonar sounds and there could be false pos

brian todd, chantilly, virginia. >>> let's get back to the breaking news which we're getting out of thed kingdom. football club manchester united sacked their manager. he had replaced alex ferguson as the devils' manager. but hasn't been a great season. issue that centuis -- they're sh in the premier league. >>> "world soccer" magazine joining us now. no great surprises here. what's been the official word? >> well, the official word has come out as these things do now in a tweet in which united have said that david has left the club. and they thank him for his hard work and integrity. >> do they really thank him for his hard work and anickably. this is -- amicably. this is -- >> yes, the building up has been since the weekend. i think they will appreciate the work and character. they've decided in actual fact they were mistaken in appointing humans in the first place. >> is it fair, though, to blame him for the collapse of manchester united do you think? >> no. i think david noyes is a very -- noys is asked to do this. he gave his speech in which he was after the end, but he's had a lot

brian todd joined us on the phone as well. that concludes our coverage for now. i'm don lemon in new york. stay tuned with cnn for continuing coverage. good night. >>> hello, everyone. i'm don lemon. 1:00 a.m. on the east coast. "inside man" will begin in a moment but first, the search is going under water now and planes are looking for debris will be called off within days. angus houston, the man in command of australia's search gave an update a short time ago. >> the experts have determined that the "ocean shield" will deploy the underwater vehicle as soon as possible. a sample of about two liters has been collected and it will be a number of days before it can be landed ashore and conclusively tested. >> the underwater vehicle will be searching areas so deep that no human has ever seen those areas. houston said, we've got to be realistic about that search. and they are explaining what happened to their loved ones. i want to go now to cnn analyst, les abend who was a 777 pilot. he's definitely trying to manage expectations but everyone who has been involved in

brian todd has more about that. >> reporter: yvonne lopez first opened fire in the medical brigade building. he then walked into the transportation building and fired again, then moved into a parking lot, his destruction while terrifying could have been so much worse had it not been for one female mp. >> she clearly performed her duty exceptionally will. >> reporter: officials won't release the mp's name saying she's germain to the investigation. but she's likely with the 720th mp battalion. they say she arrived in the parking lot four minutes after the first 911 call. he says lopez approached her and put his hands up then reached under his jacket and pulled out his gun. >> she determined that as a threat and engaged him with small arms fire, at which time the shooter did a self-inflicted gunshot wound. >> most officers would have stepped back and waited for backup, but she stepped forward. >> reporter: phillip carter was responsible for base. she had gone through 18 weeks of training, carter says including on a range involving a scenario called shoot/no shoot. >> they're designed to create

brian todd, cnn, chantilly, virginia. >>> and this raises many questions about airport security. cnn aviation analyst mary schiavo joins me from charleston, south carolina. formerly with the ntsb. good morning, mary. >> good morning. good to be with you, carol. >> nice to have you here. so there was a gap in security? who's responsible for keeping people from scaling fences outside of airports? >> well, the airport is, and the airport is responsible and has to report to both the federal aviation administration and the tsa, and apparently even though they had the fence, a requirement of federal regulations and the surveillance cameras, also a requirement. the third component is someone actually watching the surveillance cameras's apparently in did not have and only looked at them later. a huge gap in security. what's the point of the billion of dollars of equipment we've purchased after 9/11 if nobody pays attention to it? >> should we be concerned on a national scale this might be happening at other airports across the country? >> oh, it is. it is happening all over. we've put th

brian todd is live in washington with that part of the story. ian. >> good morning, carol. you were mentioning australia's top air accident investigator, martin dolan. he said a prolonged underseas search and salvage mission using privately owned equipment could cost up to $230 million more u.s. dollars. i just spoke to one of our experts, rob mccallum, an ocean search specialist. he does not believe that it would cost that much, but this gentleman in australia, mr. dolan, one of the search investigators, said this was maybe a ballpark rough estimate. it's hard to really imagine exactly how much the costs are going to be when all is said and done, but investigators do seem to be at a point where they may be taking stock of where they are right now. malaysia's transportation manager said if the search of the indian ocean doesn't find debris from the plane, he said there will come a time when we need to regroup and reconsider, but then he said the search will always continue. meanwhile, we do have some new information on the cost of this particular

. >> all right, brian todd, thanks very much. i want to go back to boston right now. it's one year exactly to the day when we had that terrible, terrible bombing in boston, at the boston marathon. the vice president joe biden is speaking. >> i've never, never, never witnessed a tribute like i've heard today. jill and i -- jill and i are honored to be asked back. and let me say to those, quote, survivors. my god, you have survived and you have soared. it was worth it. i mean that sincerely. just to hear each of you speak. you are truly, truly inspiring. i've never heard anything so beautiful, what all of you just said. i really mean that. [ applause ] and you're dangerous, young man, you are really good. i'm serious. it's just absolutely remarkable. governor, mayor walsh, you always speak well. tommy, i can tell you one thing, there's not a single person in here whose heart you did not speak to. they understood every single word you said. every single word you said. you've been my friend for a long time. the reason they heard it, your heart is as big as this city. it's

brian todd is here with this part of the story.bluefin-21, its third trip down? >> new information about the bluefin-21. this particular vehicle cost $3.5 million. but in those first two days of deployment, two glitches bit the bluefin- bluefin-21. >> reporter: sources close to the operation tell cnn the latest glitch was minor. low oil pressure in a chamber that protects part of the bluefin's electronics, it was quickly fixed, and the bluefin sent back down. it cost five hours of search time. month the bluefin cut short a mission on its own, when it started to move towards depth beyond its range. that time it finished a third of its search. >> the troubling thing is that we have all of our eggs in one basket, and that basket is operating at the very edge of its operational parameters. >> reporter: that's leading experts to question why the bluefin is the only device searching the ocean. there are other similar vehicles with better depth capability. the rima 6,000 an autonomous underwater vehicle but can go . 3.7 miles down. the u.

brian todd is here, looking into this part of the story.re is a major boeing shareholders meeting coming up and is seen as an opportunity to get answers from boeing. >> sarah partner of phillip wood is going and said they will ask additional questions aside from what they already asked the malaysian government including technical questions that happened. boeing is a publicly traded company in the u.s. and putz them -- puts them in a position of fudiciary responsibility. under the agreements that boeing and ntsb and faa have to adhere to on international protocols are cooperating in this investigation. boeing may not be able to say much of anything to the families. families want and deserve answers. what they get them from boeing is an open question. looks like they may not be able to get what they're after from boeing. >> this is a huge issue for the manufacturer of boeing. there are about 1200 triple 7s flying around the world and each co-up to 2$250 million. there was a mechanical failure that caused the disappearance of flight 370 they n

our brian todd has been looking into these high-tech devices. >> wolf, teams are stretching the boundariesand they have done it again. the latest signal came from something designed for maritime combat, not search and recovery. they are dropped out of a plane and descend below the surface, open up their payload and hunt for their target. these are not bombs or torpedos, they are called zosonobuoys. >> they deploy a hydrophone. >> a source tells cnn that sonobuoys were dropped from an australian pc-3 orion plane. >> it has saltwater switches that starts activating different deplo deployments. there's a bunch of gear in there. some of it floats to the surface so there's a radio antenna that talks to the aircraft and they are in constant communication and the microphone, the hydrophone is listening below the canister. >> the australians got this batch from american manufacturers, sent a cargo plane to indiana to pick up more than 1,000 sonobuoys. the device was first deployed by the u.s. navy but this is one of the tools the navy has to look for and track enemy submarines so they're under the

brian todd has been looking into these high-tech devices. >> reporter: they're dropped out of a planeto the sea with a parachute. descend below the surface, hunt for their payload. these are not bomb or torpedos, they're called sonobuoys. >> they're a sensor package out of the aircraft. will deploy a hydro dols phone. >> once it hits the water surface it has saltd water switches that starts activating different deployments. everything in this canister starts to unwind. there's a bunch of gear in there that is packed in nicely. there's a radio antenna that talks to the aircraft so the buoy and the aircraft are constantly in communication. microphone is listening for signals on a very long string and they deploy below the canister. >> reporter: the australians got this batch from american manufacturers, sent a cargo plane to indiana in recent days to pick up more than 1,000 sonobouys. the device was first tested and deployed by the u.s. navy but not for this purpose. >> in antisubmarine warfare this is one of the tools the navy has to look for and track enemy submarines. so they're unde

brian todd is looking into this story for us. what are you finding out?> malaysian officials have been under fire for their handling of the investigation and now they are being called out for not coordinating two teams of investigators who were looking at the flight's path. that wasted valuable time in the search for the indian ocean. for ten days, several ships and aircraft combed an area in the indian ocean the size of mexico. then, abruptly, last friday, the search area was moved. >> the search area was moved 1,100 kilometers to the northeast. >> reporter: now "the wall street journal" reports it was a lack of coordination between investigative teams which led to that initial search presumably in the wrong area. "the journal" citing people familiar with the matter to determine the path one team was calculating the fuel and consumption rate and says another team worked separately using satellite data. it was only after information from both teams was merged that "the journal" reports that the search was shifted 700 miles the other way. >> in this case w

they are listening for mostly sounds, our brian todd has more. >> reporter: we're hanging on what they'rering. the black box findings rest on a control bunker on the ocean shield. >> day and night, you know, there is no break. they're pretty much on all the time. and what they do is so important to us. >> reporter: we went behind the scenes at phoenix international, the company that made the towed pinger locator that is scouring the ocean field. >> you will sit for days at a time, listening to nothing. and then you might hear a chirp, but you don't hear another one. but until you can duplicate it and run it back in different numbers only until then are you positive you have it. >> reporter: and even then, sound in the ocean can play so many tricks on your ear. >> several people can look at the same thing and hear different things. >> reporter: false positives and research information left in the area can play tricks. phoenix operators are good at weeding out false positives. they do it by carefully monitoring the frequencies and the repetition rate. they're highly trained to be discipline

our brian todd is here for more on what's going on.e ship, walk us through what's going on now. >> we've gotten some good access to the people of phoenix international, the makers of the towed p eed pinger locator. they're also, nine of them, are on board the ocean shield now and they're also the detection specialists. they're the ones listening for the pings. it is painstaking work. they have to have a finely trained ear, a finely trained eye. not only are they listening for hours on end, they're also looking at monitors that have these blips on them that can show them the frequency of a ping, the consistency of a ping. a lot of the time they're listening in total silence for hours. it's been described as tedious, meticulous. i asked one of the people at phoenix international, does it drive them stir crazy? he said, yeah, it can do that. they look forward to meal time because it breaks up the monotony. we're cringing on everything these guys are listening to. >> what kind of rotation schedule do they have? how long can they basically

>> brian todd, thank you so much.mary, this notion of that device, we talked about it a couple weeks ago, what happened that it wouldn't go off. now we're listening to brian todd's report and jeff wise's theory that maybe it landed so gently perhaps it didn't go off. do you have any new thoughts as we have to now revisit the resetting of the entire investigation? >> well, sure. right. sure, the piece was very good explaining what might have. but there are two more things that might have happened, too. one, we don't know when they last changed the batteries, when they last checked on the batteries on the elts to make sure they were in functioning condition, and some of the satellite algorithms, and which satellites these were going to signal to did change a few years back. we don't know if they updated their service. there are additional reasons why even if they did go off, they might have not been received. so there's lots of mysteries. but the malaysian airlines, of course, could solve that mystery by explaining when