Lol. You know, if it was not so dman controversial and now impossible, it would be great to have a hijacking plotline XD
Back in the day, before 2001, hijacking, while not common, was a reality of flying. Even as a child, my father instructed me on what to do in a hijacking situation. It used to be: Stay calm, sit in your seat, do not draw attention to yourself, and wait for the UN to rescue you. It was a fairly safe and painless process (this statement is HIGHLY relative).
Now a days, the c0ckpit is bullet proof, the flight attendants are trained in basic self defense (if not more), no one will sit peacefully, and it would be waaay too political to do.
Kinda sad cuz 90's style hijacking would make a great plot. /me sighs