matter what was going on, if they had not heard from the aircraft in the air or from the crew on the ground saying they had an emergency somewhere and landed somewhere else, that there was probably not a great deal of hope that they're going to find the air flight in one piece. >> is there ever -- obviously when you suspect an aircraft may have gone down, and we don't know what has happened in this situation yet. is there any reason to think terrorism outside influence on this aircraft? >> well, i mean, as i said earlier there are only a couple of reasons that an aircraft would go -- as we call -- go completely dark and just you know, disappear out of the sky with no radio, no radar, nothing. and certainly there could have been an explosion on board. for whatever reason, we don't know. but again, there is not very many causes that could have been so catastrophic that this crew