Read this story Richelieu, http://www.chicagotribune.com/featur...,2534148.story (I also personally heard the same story on CNN and FOX news)
and consider that any nation that actually gave the order and was ready to shoot down it's own civilian airliner full of innocent American citizens with military jets scrambled to do so if the pilot did not obey orders to fly where he was told (and the terrorists aboard the hijacked airliner DID NOT obey those orders) would NOT find it inconceivable to be more in physical control of such a plane should future such incidents arise.

There was no time to scramble military planes to stop the Pentagon and Twin towers attacks before they happened, we were told, but future such "last minute" diversions of an airliner by hijackers near a sensitive potential target HAD TO BE CONTROLLABLE BY "AUTHORITIES." If you believe such leaders would have just thrown up their hands and said "Oh, well if there is no time to scramble military jets to shoot it down we will SIMPLY RELY ON THE PASSENGERS ONLY to stop the terrorists using that airliner as a missile." then you are much more naive, foolish and trusting than you make me out to be when I tell you there is GOOD REASON to believe the authorities ARE, nowadays ultimately in IMMEDIATE final control of any airliner and able to remotely prevent it from successfully being used as a missile, if they are convinced that is is about to be so used.

Personally, I believe such equipment was installed at the same time ALL airliners were, one by one said to be being "retrofitted" with "stronger cockpit doors."

and "god_forbids"-

Call me a nut if you want to but I did not get to my age without sagacity, circumspection and discernment.