9/11 hijacker Salem Alhazmi leaves Saudi Arabia. The precise date is unknown, although it must be some time between June 20, when he obtains a US visa in Jeddah (see June 20, 2001) and June 29, when he arrives in the US from the United Arab Emirates (see April 23-June 29, 2001). [9/11 Commission, 8/21/2004, pp. 25-27 ] According to the 9/11 Commission, Alhazmi has a passport containing an indicator of Islamic extremism (see June 20, 2001). Such indicators are used by the Saudi authorities to track some of the hijackers before 9/11 (see November 2, 2007).