CNN The Lead With Jake Tapper April 9, 2014 01:07:00
Association. david, let me start with you. they have released new search maps today. one of them shows a sonobuoy area, can you explain what that is and what they're looking for? >> well, sonobuoys have been deployed before, about five or six inches in diameter, when they hit the water they will deploy a float and a transmitter on top of the water. it is a depth that the sono buoy can drop down to. it may not necessarily pick up a pinger, but it could. it is within the 4,000 meter range, but that is what the sonobuoy,they're very effective in maintaining where you were when you saw something o...