but we have seen things like this before. i know you guys have been talking about helios from 2005. that's a classic example of a pressurization issue where the crew didn't realize what was happening fast enough to deal with it. in that circumstance, the airplane just -- once the pilots passed out, kept going to its destination, athens, went into orbit at altitude, and it too crashed after it ran out of gas. the thing here is, with all of the radical maneuvers up front, and the obvious turn that had to occur to put it on this direct south heading, that argues for something else. and in terms of a fire, i've studied a lot of fire accidents. and literally every single one that has resulted in the airplane subsequently crashing after a known in-flight fire, it happens relatively quickly.