the one where the white arrow is, the one we're really concerned about, i think it fits the pattern beautifully. and i'm very excited about that development. >> all right, vernon, give me your best guess. and obviously, there's a lot to learn and recovering black boxes is something that could potentially happen, as you get closer to that debris site. your best guess of what could have happened to this plane. >> well, there are three or four options, but the best guess i have is that they had an explosive decompression, disintegration of the aircraft at 37,000 feet, about one hour out. this would fit that, if we do that that way. so i think i'm pretty well convinced that's what happened. there was no announcement by the cr crew, had there been intrusion into the cockpit, they would have had a chance to give a mayday. they didn't have that chance. it had to be sudden and