They don't jump out of commercial airliners. Airliners didn't always have this door mechanism: http://en.wikipedia.org/wiki/D._B._Cooper http://en.wikipedia.or

They don't jump out of commercial airliners. Airliners didn't always have this door mechanism: http://en.wikipedia.org/wiki/D._B._Cooper http://en.wikipedia.org/wiki/D._B._Cooper