On #2, I think people may forget that prior to 9/11, the idea was to let the hijacker go where they wanted, as the passengers usually ended up safe due to coope

On #2, I think people may forget that prior to 9/11, the idea was to let the hijacker go where they wanted, as the passengers usually ended up safe due to cooperation. Even on the day of 9/11 itself, once passengers realized cooperating was going to get them killed, then fighting back gave them a higher chance of survival. The 2016 Brussels bombing did involve explosives in the check-in area of the airport.