air. as tom and i spoke off and on the air today, something catastrophic apparently happened at altitude with this flight crew and this airplane that seems to have caused a sudden pitch control problem, where the captain and the co-pilot could not control the up and down motion of this aircraft because of data returns we've seen from flight radar 24 show that the plane oscillating essentially in those last few seconds. i would imagine being a passenger on that flight would probably be pretty scary to have an aircraft going through that kind of movement on the way to the ground. and then of course we know that the radar control -- radar contact, was lost before the flight hit the ground. so whether there was a break-up of the aircraft, we don't know. there apparently was, according to our producer in cairo, a post-crash fire and many of the bodies succumbed to fire as well. so a lot more details coming out as we go forward in the morning, the afternoon. >> all right, also joining us at