There were a total of 19 hijackers involved in the September 11, 2001 attacks. These 19 men were divided into four teams to hijack four commercial airplanes in a coordinated terrorist attack planned by al-Qaeda.
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There were a total of 19 hijackers involved in the September 11, 2001 attacks. These 19 men were divided into four teams to hijack four commercial airplanes in a coordinated terrorist attack planned by al-Qaeda.
