I just watched a hand-held video NASA released taken by the crew 11 minutes before the break-up. There is no indication in the footage the crew had knowledge of any problems, though it is a bit eerie watching them film the plasma building through the windows and commenting about it....the film ended about 4 minutes bofore any trouble began as they first entered the atmosphere...the rest of the file was destroyed. It will air again at 3 pm and 6 pm (EST) on the 24 hr news channels, for those who might be interested.