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How many terrorists were involved on September 11th 2001?
By Cynthia Kirkeby
Oct 17, 2006, 07:43

How many terrorists were involved on September 11th 2001?

According to Wikipedia, “27 members of al-Qaeda attempted to enter the United States to take part in the September 11 attacks, only 19 participated. Other would-be hijackers are often referred to as the 20th hijacker.”

“A 20th hijacker is a numeric metaphor concerning a possible additional terrorist in the September 11, 2001 attacks who was not able to participate. The term is somewhat misleading, as there is no evidence that al-Qaeda ever planned to have exactly 20 hijackers. There were many variations of the 9/11 plot, with the number of terrorists fluctuating with available resources and changing circumstances. In the end, there were 19 hijackers: three of the planes were taken over by five members each and the fourth was hijacked by only four people. One plane, United Airlines Flight 93, had fewer hijackers than the rest, thus the idea of a 20th hijacker came to be widely discussed.”

The hijackers aboard American Airlines Flight 11 were reported to be:
  • Mohamed Atta (Egyptian)
  • Waleed al-Shehri (Saudi Arabian)
  • Wail al-Shehri (Saudi Arabian)
  • Abdulaziz al-Omari (Saudi Arabian)
  • Satam al-Suqami (Saudi Arabian)

Mohammed Atta is believed to have flown Flight 11 into the North Tower of the World Trade Center.

Aboard United Airlines Flight 175 the hijackers were reported to be:
  • Marwan al-Shehhi (from the United Arab Emirates)
  • Fayez Banihammad (from the United Arab Emirates)
  • Mohand al-Shehri (Saudi Arabian)
  • Hamza al-Ghamdi (Saudi Arabian)
  • Ahmed al-Ghamdi (Saudi Arabian)

Marwan al-Shehhi is believed to have flown Flight 175 into the South Tower.

The hijackers aboard American Airlines Flight 77 were reported to be:
  • Hani Hanjour (Saudi Arabian)
  • Khalid al-Mihdhar (Saudi Arabian)
  • Majed Moqed (Saudi Arabian)
  • Nawaf al-Hazmi (Saudi Arabian)
  • Salem al-Hazmi (Saudi Arabian)

Hani Hanjour is believed to have flown Flight 77 into the Pentagon.

The hijackers aboard United Airlines Flight 93 were reported to be:
  • Ziad Jarrah (Lebanese)
  • Ahmed al-Haznawi (Saudi Arabian)
  • Ahmed al-Nami (Saudi Arabian)
  • Saeed al-Ghamdi (Saudi Arabian)

Ziad Jarrah is believed to have crashed Flight 93 into the Pennsylvania countryside to prevent or end an assault by the passengers.

Ahmed al-Ghamdi, Saeed al-Ghamdi, Hamza al-Ghamdi, and Ahmad al-Haznawi came from three neighboring towns and belonged to the same tribe. Wail al-Shehri was Waleed al-Shehri's older brother. Salem al-Hazmi was a younger brother of Nawaf al-Hazmi.

Cynthia Kirkeby
ASK ClassBrain

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