Locking cockpit doors on jetliners would have prevented 9/11, even w/ Bush ignoring daily Presidential briefs warning of an iminent attack and an FBI agent trying to get her superior's attention about some suspicious Middle-easterners in flight schools in the U.S.
How many 100s of billions of dollars and dead and maimed soldiers and civilians would that have cost?
I've never been the conspiratorial type, at all, but it is hard not to wonder if certain people and industries w/ a vested interest in war are not using a terrorist attack as an excuse for some absolutely horrible policy.