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The water. that's where you'll find the black boxes. that's where the pingers would be if they activated. so you shouldn't have to look very far. i really think that if these things had been working they would have been detected. so i suspect as in the case of air france 447 where also the pingers didn't work we probably need to conclude that they're not working, we just have to look by side scan sonar to find the debris. >> paul, a followup to you because you said there are two potential signals investigators could be working from, the pingers from the plaque boxblack boxes but also the trans...

Airasia didn't go to the proper authorities to say "can i rearrange the flight schedule?" i know that's part of the ongoing investigation. david molko, thank you so much. the search takes on new urgency, of course, with each passing day. much of the focus now turns to locating the plane's black boxes by chasing down the tiny signals from the so-called pingers. and because they are battery powered, those signals are likely to just disappear few n fewer than three weeks. jeff wise is a cnn aviation analyst and paul ginsburg is an audio analyst who has worked with the fbi and cia. paul do you h...