jacuzzi. they still may have a very hard time trying to trace backward how are the winds on each day in the eight, nine days that have passed how have they changed? where were they? what was the direction, velocity? it makes it very difficult. if you lose your aerial capability that's a huge piece to lose. >> are you surprised, david soucie that there hasn't been more wreckage found floating or even some that may have washed ashore at this point? >> i would expect some to be washing ashore at this point. but with the weather as bad as it is i don't know if they can people that can get out there to look at the shore from the outside. i'm not that surprised by now just because of the lack of access. >> david gallo, when you have sonar detection of something that searchers want to check out or a device really detects anything under water, what are the next steps from there? >> sonar intimates with sound. and it takes talent to be able