Cockpit doors and the fact that just letting hijackers do what they want is no longer acceptable to Americans. We solved the hijacking problem about 60 minutes after the first plane hit the twin towers. Flight 93 is proof of that.
It’s a good question. If you filled a flight with as many attackers as you could get tickets for, would the remaining seats have enough people willing and able to fight back? I’ll admit I’m glad they lock the cockpit doors.
