CNN Erin Burnett OutFront April 10, 2014 23:04:00
>> yeah, erin, that latest ping coming from a sonar buoy. these planes that have been out there, this is really an added tool to the ship that has been towing around that ping locator. what the planes do, they can carry up to 84 of those things. and they've been peppering the ocean near the ocean shield vessel where which picked up of course the four pings since last saturday. these buoys drop a line a thousand feet down into the ocean, and they listen. well, it seems one of them got a hit, a ping within the frequency range. all the data recorder. and according to researchers, has the potentia...