across malaysia out into the bay of bengal. it wouldn't seem to me that that would be a logical sanctuary for a crippled airplane. >> would you make these calculations and make these computations, would you be able to do that, peter, in flight, if something were going wrong? >> oh, absolutely right. these waypoints are generally identified. i don't know about the overseas routes but here in the u.s., way points are identified by a three or four or five-letter names. you just type those in. and the system knows where it goes from there. that's what would happen. we are talking about perfectly normal operation of the airplane up and away. >> mary, it occurred to me we are talking about a high-tech machine. you talked to us about this incredible amount of electronics below and the computer systems