I find it hard to believe 19 people, not qualified to fly an airplane, boarded 3 jet planes in 2 major east coast airports and were able to take over control in flight, flying 2 of them into buildings in NYC and causing the 3rd to crash. It just doesn't add up.
On the other hand, given how hard it is for ONE person to keep a secret I find it almost impossible this was a mass conspiracy with many people involved.
One thing IS apparent, this admin sure mobilized quickly to blame SH for somehow being involved with the 911 tragedies, giving them an excuse to invade Iraq.