look at the debris field, that debris, very small pieces strewn about a four-acre area, one investigator said the plane was completely obliterated. have you been able to make any judgments based on what you've seen either by the size of the pieces or the wreckage that you could spot? >> well, it looks like there was two scatter points we call them scatter points because that's the point at which it hits the ground and the airplane breaks up. it appears to be two scatter points which suggests no in-flight breakup or structure before it hit the ground. but it hit one ridge probably separated into two pieces at that point. but it happened so incredibly fast that no one on board would have been cognizant of what was happening at all. it just would have happened incredibly abruptly fasts, a matter of tenths of seconds, from the time it hit first and the second part. remember, this is a pressurized