with us is alan diehl, a former accident investigator. alan, what needs to happen now?or the search commanders, for the people out there, what's next? >> it looks like we're waiting for the "echo "to make it to the location of the chinese vessel. you heard the figure 14 hours in transit. that's going to be a very significant development. remember, the chinese detected this twice. it's probably a fairly small haystack. he said the water was 4.5 kilometers deep. that's three miles. the range of these pingers is only guaranteed to be a little over a mile. so i'm sure these signals are very faint and they need something like the echo and its resources to go deep and get a better fix on the potential location of those pingers. >> al, he did say usually if it is a pinger that it would be consistent, that they would hear longer than a minute or 90 seconds. >> he and other people had a discussion with the discussion about thermal layers and there may be geometry with the pinger, the black box being on the side of a hill or something and as the vessel moves, it could shift aroun

. >> joining us via albuquerque is dr alan diehl, a former investigator with the national transportation safety board and author of "air safety investigators", thank you for being with us. these pings - are they the best lead yet? >> i think they are. obviously we have to be cautious. this is the most promising thing since the satellite data, which shifted towards where the pings are heard. >> when australian authorities say the pings resemble the black boxes, they urge caution. let's listen to what they said. >> in the days, weeks and possibly months ahead. there may be leads such as the one i'm reporting to you this morning, on a regular basis. i would ask you the media to treat them as unverified until such time as we can provide unequivocal determination. >> there he is, calling it unverified. is there other equipment that might emit pings underwater that might get confused with a black box ping? >> not that i'm aware of. it's not just the frequency of the signal, it's the repetition, the one minute rep station. that sounds an awful lot like a black pox. we need to wait and we know t

alan diehl, a former ntsb investigat investigator. >>> billions of student misdozens of states starting the common core testing this week. students are opting out in record numbers now. in indiana, already dropping the controversial program as parents are upset over the government dictating what their kids should learn and the data government is collecting. common core could have a major impact on the midterm elections. let's go to the newsroom with more. brian. >> 45 states and washington, d.c. have adopted the common core initiatives, implemented under president obama's first term, testing students grades 3 to 8 on english, language arts and mathematics. morning w new york was one of the first. but this year as many as 30,000 parents in the state have opted out of the test, double last year. from new york to oklahoma, concerned parts say the testing allows the federal government to dictate curriculum, taking power away from local districts and educators. parent and critics say common core testing is you causing unnecessary stress and anxiety, forcing students to learn a test and nothi

alan diehl, mary schiavo, and david soucie, thank you very much.xt step in this search will go miles deep under water. how will they look? and particularly, without a shred of sunlight or evidence on top of the water? i'm on expert on softball. and tea parties. i'll have more awkward conversations than i'm equipped for, because i'm raising two girls on my own. i'll worry about the economy more than a few times before they're grown. but it's for them, so i've found a way. who matters most to you says the most about you. at massmutual we're owned by our policyowners, and they matter most to us. ready to plan for your future? we'll help you get there. >>. >> four pings heard in the indian ocean have narrowed the search area for flight 370. it's not nearly as wide as it was before. but it is still just as deep. crews will need a new set of tools to search nearly three miles now down to the ocean floor. rosa flores has more. >> reporter: four times investigators have heard pings that are consistent with the signals coming from the missing jet's data rec

. >> alan diehl. former investigate junior and author of "air safety investigators using science to save lives - one crash at a time", thank you for your time. >> a prayer service for the crew, flight family and passengers is occurring now. buddhist organizations organised the event and it is broadcast online. we'll hear more from a conference from the australian search group. stay tuned for that. >> the army believes an army with other soldiers most likely led ivan lopez to open fire. >> the commanders said it was an argument that was a precipitating factor to the shooting on wednesday, and the father of a shoulder wounded said his son saw ivan lopez go into the personnel office to request a leave form. when ivan lopez was denied the form and told to come back the next day, the specialist became angry, got his gun, came in and began to shoot. he killed three soldiers, wounded 16 before turning the gun and killing himself. we are learning more about who lopez was from his friend in puerto rico where h

my panel of experts, michael kay, les abin, paul ginsburg, alan diehl, and rob mccallum.b mccallum, to you, as we have been pointing out on cnn, the experts and the investigators in the field, we don't know if this -- these signals are coming from the black boxes from mh 370. but this is the most encouraging bit of news so far. >> encouraging for two reasons. one is that it's on equipment that is designed to operate at depth. the deeper you are, the better quality of signals that you can expect. and secondly, it's being heard twice by people who are highly trained and actually trying to get the effect that they got. so it's a tremendous achievement when you consider that to get to this very spot to deploy the tpl has taken an awful lot of work by the people in the back room. it's nothing short of miraculous. >> yeah, and i think it was you who said that it was going to take a bit of luck. and maybe a number of people said that, that it was going to take a bit of luck considering just how vast this search area is, even with the mathematical equations that have narrowed it

alan diehl hopefully they'll make the pings last longer. thanks for joining us.d he on facebook, follow me at twitter and we'll see you next week same time. why relocating manufacturingpany to upstate new york? i tell people it's for the climate. the conditions in new york state are great for business. new york is ranked #2 in the nation for new private sector job creation. and now it's even better because they've introduced startup new york - dozens of tax-free zones where businesses pay no taxes for ten years. you'll get a warm welcome in the new new york. see if your business qualifies at startupny.com (mom) when our little girl was we got a subaru. it's where she said her first word. (little girl) no! saw her first day of school. (little girl) bye bye! made a best friend forever. the back seat of my subaru is where she grew up. what? (announcer) the 2015 subaru forester (girl) what? (announcer) built to be there for your family. love. it's what makes a subaru, a subaru. (agent) i understand. (dad) we've never sold a house before. (agent) i'll walk you guys th

. >> alan diehl, would you know that?g upon where in the ocean they are, other possible -- >> i'm sorry. rick gillespie, would you know that? either of these two preferable? >> i wouldn't know. there are a lot of sounds in the ocean. i would think you would want to pick something that is least likely to emanate from biological sources. >> correct. >> they've done that with the frequency. they've got a frequency less likely but it is a signature, if it is a known signature they can look for it. that's where guys like paul come in. >> that's the thing. many people were saying, this could be ocean life, it could be a whale, a tag. do, it could be any sort of military signal that they use for testing. you're saying there are signature that's are specific to these boxes. >> i think dolphins have high intelligence but i don't know that they could repeat the exact pulse safe. >> the tag. the tag that they use on the dolphin to track them. >> possible. >> i was going to say that the animals aren't quite good enough to do 1/10,000