in the indian ocean. they could find out in hours if it s debris from the plane. now it s the race against time to find the flight data recorder. it will only continue emitting a ping for two more weeks and that data is crucial to finding out what happened on board. we ve had a busy weekend. we re so glad you could join us again this morning. again, we know that the efforts are now under way to get to the area where these australian planes found some debris floating to identify if they were from the flight. putting that aside for a second, what they really need is this, the flight data recorder. that s right. now, they re trying to bring in these hydrophone devices. give us an idea of how those work and what it can help us with. we re still one step away from getting to the hydrophones. but this is the holy grail, this