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Without any difficulty. whether that's a factor, we simply don't know. they'll be looking to speak to eyewitness to hope they will provide some clues as to what happened in southern france today. >> alistair jameson, thank you. joining me now is former ntsb investigator greg fife and ceo of safety operating systems john cox. thank you, gentlemen, for joining us. greg, let me start with you. what do we know now about what brought this plane don't? >> right now, we don't have a lot of valid information. we have a lot of speculation. there's information on the internet with regard to the flight p...