Detailed text transcripts for TV channel - MSNBC - 20150102:20:05:00
Hydrophones in the water to just follow a sound. if they get a sound, they'll go back and forth and cover the search area -- >> what sound are they looking for? >> they're listening for metal objects. ideally if they can pick up a ping that's what -- but it will give you the sound. the sonar is working under water to give them some kind of feedback there's something in this immediate area. >> greg i want to come back to you with a question about how this sort of all came about, what happened with the accident. there's been speculation now that perhaps the pilots actually tried to land the plan...
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