I agree with BmPilot21 and Erik. The law in the U.S. to lock the door didn't stop them. Personally I don't like being made a prisoner in my own 'plane. That's not why I joined the airlines.
Everyone assumes that the hijackers are on the aircraft. How about preventing them from boarding in the first place?????????
Better yet, how about finding out just WHY we have hijachers in the first place.
If we as humans could learn to co-exist on this GOD given planet instead of drawing lines all accross the land and pretending that it belongs to us so nobody can set foot on "our side" of the line, and if we would stop teaching our children to hate others, maybe, just maybe we could leave the cockpit doors open. THINK ABOUT THAT !!!!!
All this talk of guns, locked doors, sprays, marshals etc makes me SICK.
Nobody should take the fun out of flying. NOBODY.