Geiginni,
You don't need to fling the aircraft all over the sky to hurt someone, I can bounce you all around the back with very gentle control inputs.
To everyone with strange,expensive and unrealistic ideas about redesigning aircraft etc get real....the only affordable option is HIGHLY trained 'Sky Snipers'.
A minimum of two on every aircraft likely to be a target of this kind of obscenity, seated wide apart but with NO-ONE on board knowing who or where will be the only way to stop these things ending badly.....NOTHING can be done to stop them starting.
The best part about it they already exist and are already trained and the Govt already pays them to play at their jobs....they're called SAS!
Chuck.