would shut off either a cataclysmic event or somebody did it on purpose. the transponders which transmit at tour altitude speed. they haven t found any debris in the area where the transponders were shut off, so that would suggest potentially somebody did that on purpose. greg, do you want to pick up on that, please? absolutely. tom brings up a good point. if there was an explosive decompression. let s say a window blew out or a door blew out and material was actually sucked out of the aircraft, you would expect to see even the lightest debris along the flight path. the searchers haven t found any of that, especially over the water. so given the fact that if the airplane is intact and that turn was made, that wouldn t have been made by an auto pilot because the auto pilot would have already had a preprogrammed route of flight to go to beijing and it would have continued on track. so it s evident that the course was altered and most likely altered intentionally by either one of the