We are now in a simulator. it's a struggle to get the plane there. it was never meant to fly this high. and even though we have a real good pilot, tell us what it's like to keep the aircraft here. >> it's very difficult to control. part of the problem you have is this plane is on the brink of stalling, going too slow, but at the same time almost at the brink of going too fast. a raiser edge of balance. let's talk about that sudden decent that's been described. a plane descending pushes over the top. something reported to be around 45,000 feet a minute. it couldn't fall that fast. if you try to...