A declassified CIA email, sent from ‘Mary to John’ on August 21, 2001, focused on future 9/11 hijacker Khalid Al-Mihdhar and his presence in the U.S. It read: “[Redacted] as I was reviewing all the cables on Khalid Al-Mihdhar, I noticed he had a U.S. Visa in his passport. I asked INS [Immigration and Naturalization Service] to check and they just came back and said he entered the U.S. on 15 January 2000 and listed the Los Angeles [redacted] as his destination. He departed the U.S. on 10 June 2000. I looked through traffic and could not find anything else. I’ll be sending [redacted] to FBI to pass what we know of Khalid Al-Mihdhar and that he entered the U.S. on 15 January. Maybe there is something they can do…” [Editor’s note: According to the 9/11 Commission report page 270, ‘Mary’ is most likely an FBI analyst assigned to the CIA’s Bin Ladin unit.]
– CIA, “Re: Khalid Al-Mihdhar,” Memorandum, CIA Email. Cited in 9/11 Commission Report as “Mary to John,” The Central Intelligence Agency’s 9/11 File:, The National Security Archive, Aug. 21, 2001