is they are having a problem with that. but they do believe that there are people that may be able to shed more light on things that happened leading up to this event that may give us a clue as to perhaps why the pilot would have been responsible for an act like this. >> miles, it's almost impossible to imagine, again, there's a lot of investigating still to be done so all we can say is at this point officials don't have a smoke gun really of the pilot or co-pilot. if indeed it does end up they are involved and if that's how this goes, and there was no smoke gun, and nobody says anything was wrong, that is a truly terrifying prospect that someone could commit an act like this and nothing outwardly would have seemed wrong. >> the perfect crime, if you will. i would caution everybody, this -- the pilot is the aviation equivalent of the butler. they are frequently blamed in these cases. it's frankly convenient for