United 93

Audio problem: When auditing the recording of one of the first hijacks, the FAA reviewer rotates the tape reels back and forth in order to find just the exact words from the hijacker. As the sounds play, the reel moves barely half a turn, but the reviewer rewinds it more than one revolution, not nearly returning to where that sound would be.

Continuity mistake: After the hijackers have taken over the plane, the blond flight attendant's hair, styled in a French Twist, keeps changing from messy (presumably from the chaos) to as smooth and neat as when she boarded the plane. She's never offscreen long enough to have simply fixed it. Not until the passengers revolt does it remain disheveled.

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Mohammed Atta: We have some planes.

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Trivia: The FAA National Operations Manager, Ben Sliney, was played by himself. September 11/2001 was also his first day on the job.

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Question: In the beginning of the movie, why were the hijackers shaving their chests and genital areas? Is this some kind of religious ritual?

Answer: Muslims are supposed to remove their pubic and armpit hair at least every 40 days. It is part of being clean and they would want to be as clean as possible while committing an act on behalf of their religion.

Myridon

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