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Conducting this flight. >> greg, the point is that there is evidence that somebody in the crew is turning off its its the communications, turning off the radar and all of a sudden you see it re-emerge on a different flight path after a turn. that says to you somebody has made a deliberate decision to commandeer this aircraft and go in a different direction? >> absolutely. there would never be a reason for a pilot to turn off the transponders. that is the key for air traffic controllers to be able to track that airplane at all times in the air. there would have been no reason to turn off the tr...

Conducting this flight. >> greg, the point is that there is evidence that somebody in the crew is turning off its its the communications, turning off the radar and all of a sudden you see it re-emerge on a different flight path after a turn. that says to you somebody has made a deliberate decision to commandeer this aircraft and go in a different direction? >> absolutely. there would never be a reason for a pilot to turn off the transponders. that is the key for air traffic controllers to be able to track that airplane at all times in the air. there would have been no reason to turn off the tr...

Than normal duties and actions. they are going to look for those characteristics that might shed light on why someone could do this, take over the aircraft and do something to kill not only himself, but those folks on board. >> greg, these communication systems, specifically the transponder and data flow systems, how complicated is it to turn them off? >> it's very easy to turn them off. you never have to leave the seat in the cockpit. a lot of people have made a big deal about the acar system. you can turn the data portion of that off from the cockpit. you never have to leave the cockpit or p...

Evidence, that this was some sort of intentional act by the pilot, pilots or possibly someone else. >> yeah, because i guess that's the question. how -- to pull off a maneuver like this. how specialized is the training need to be? is this something that plausibly, you know, a passenger could have learned on his or her own and gotten control of the cockpit or would it realistically have to have been the pilots? >> based on all of the things that transpired, the shutting down of the transponders, the shutting down of the data portion of the acar unit. the fact that this plane is traveling over a...

Boxes as deep as 16,000 feet below the surface and gotten back good data. so -- but this was an extraordinary search, and it was a very fortuitous find of these two black boxes. jon: but it does suggest that there was a violent, violent collision. i mean, to strip the black boxes free of the structure of the airplane. >> absolutely. and another thing is that the data portion, the round football-like structure, that was separated from the black box itself. so there was really tremendous force when that plane hit the water. jon: the fact that they were able to get the information off, i mean, th...