first incident, one might surmise it was some kind of accident and this to have a second, what appeared to be 727 jet, of course the question of terrorist activity has it surface. and the question of whether this was an intentional terrorist act of some kind. >> you know, keep in mind that we are in an area where there are three major airports. newark airport, kennedy and la guardia airport all within several miles of the world trade center. it is very odd for a plane to get into this area without being tracked or identified by air traffic control. would you have to imagine that, a, if this plane were headed right for the world trade center, there must have been someone trying to talk or communicate with that pilot. and for it to fly right into the side of the building. >> the smaller plane can you understand, almost. but a large jet, jumbo jet -- >> let's rerack that video if we could, down in the control room. where we actually saw the jet flying into the building.