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Khalid al-Mihdhar was born on 1975-05-16.
Khalid al-Mihdhar died on 2001-09-11.
The 9/11 hijackers were Khalid al-Mihdhar, Nawaf al-Hazmi, and dozens more that would take me forever to list. Check out the wikipedia page, it lists all of them and more.
Khalid A. Al-Falih was born in 1960.
Khalid al Deelawi was born in 1985.