The hijackers were going to crash the plane and kill everyone on board and anybody at the target crash site. The calculus for using a plane as a missile has ch

The hijackers were going to crash the plane and kill everyone on board and anybody at the target crash site. The calculus for using a plane as a missile has changed. Passengers simply won't allow it to happen and there is a locked cockpit door. A similar event isn't impossible but nothing TSA or air marshals do is preventing a hijacking.