Some sort. but i think to make my theory work, you will see it later on, one of the pilots might have actually cooperated because it might have gone to 45,000 feet because they wanted to asphyxiate everybody on board except the ones in the cockpit, who had access to the oxygen masks. >> okay. >> the cockpit oxygen supply lasts much longer. >> stand by because i want to bring in mitchell now. mitchell, when you're doing that demonstration in the simulator with martin savidge, i think you said it and other people have said it, it's really tough for a plane to get to 45,000 feet especially for so...