Robert Bonner, the head of Customs and Border Protection, later testifies, “We ran passenger manifests through the system used by Customs—two were hits on our watch list of August 2001.” (This is presumably a reference to hijackers Khalid Almihdhar and Nawaf Alhazmi, watch-listed on August 23, 2001.) “And by looking at the Arab names and their seat locations, ticket purchases and other passenger information, it didn’t take a lot to do a rudimentary link analysis. Customs officers were able to ID 19 probable hijackers within 45 minutes. I saw the sheet by 11 a.m. And that analysis did indeed correctly identify the terrorists.”
[New York Observer, 2/15/2004] However, Bonner appears to be at least somewhat incorrect: for two days after the attacks (see September 13, 2001-September 14, 2001), the FBI believes there are only 18 hijackers, and the original list contains some erroneous Arab-sounding names on the flight manifests, such as Adnan Bukhari and Ameer Bukhari. [CNN, 9/13/2001] Some hijacker names, including Mohamed Atta’s, were identified on a reservations computer around 8:30 a.m. (see (Shortly After 8:32 a.m.) September 11, 2001), and Richard Clarke was told some of the names were al-Qaeda around 10:00 a.m. (see (9:59 a.m.) September 11, 2001)