With passengers. they could have taken a cargo jet or something that was empty or just, you know, full of cargo going from one place to another. i mean, obviously we're all just guessing here. every day there is a few more piece that is come together. this altitude shifting and also the fact that the pilot's last comment, he said, good night to the controller, came after the transponder was turned off. what do you make of that, robert? >> well that is strange. there is no doubt about that. and that is one of the fact that is we keep shaking our heads about but there have been so many. people h...