The symbol of American Presidency, was saved by its people.
The sinister plan of United 93 was defeated by the alerted and unarmed passengers of United 93.
And as Zacarias Moussaoui is under trial for not revealing information that could have made a difference, the voice recorder in the cockpit of United 93 is revealed.
The passengers continued their assault and at 10:02:23, a hijacker said, "Pull it down! Pull it down!" The hijackers remained at the controls but must have judged that the passengers were only seconds from overcoming them. The air plane headed down; the control wheel was turned hard to the right The air plane rolled onto its back, and one of the hijackers began shouting "Allah is the greatest. Allah is the greatest?’this is the story behind it all. (link)