Khalid Muhammad Abdallah al-Mihdhar was a Saudi terrorist hijacker. He was one of the five hijackers of American Airlines Flight 77, which was flown into the Pentagon as part of the 11 September attacks.
Khalid al-Mihdhar
Parkwood Apartments complex, located in the Clairemont Mesa section of San Diego, where Mihdhar and Nawaf al-Hazmi lived from February until the end of May 2000
Anwar al-Awlaki in Yemen, 2008
The Pentagon, minutes after American Airlines Flight 77 crashed into it
Hijackers in the September 11 attacks
The hijackers in the September 11 attacks were 19 men affiliated with Islamist jihadist organization al-Qaeda. They hailed from four countries; 15 of them were citizens of Saudi Arabia, two were from the United Arab Emirates, one was from Egypt, and one from Lebanon. To carry out the attacks, the hijackers were organized into four teams each led by a pilot-trained hijacker who would commandeer the flight with three or four "muscle hijackers" who were trained to help subdue the pilots, passengers, and crew. Each team was assigned to a different flight and given a unique target to crash their respective planes into. Mohamed Atta was the assigned ringleader over all 4 groups.
Mohamed Atta (American Airlines Flight 11)
Marwan al-Shehhi (United Airlines Flight 175)
Ziad Jarrah (United Airlines Flight 93)