that's where most of the threats have come, from a flight crew, passengers in 9/11. >> jim tilmon question from michael. is it possible to lose all flight controls and have the 777 take over on the last program vectors? basically, if things went wrong would the plane just automatically default to its last flight? >> kind of yes and no. it's not like the airplane has a brain of its own. if it was programmed for a certain kind of heading and altitude and sort of thing, and then nobody put in a new input it would continue that until it ran out of fuel. but i think that is far-fetched. i'm sorry. >> thank you very much. we'll be right back. don't go anywhere. still taking some of your questions. we asked people a question,