United States v. Khalid Sheikh Mohammed, et al. is the trial of five alleged Al-Qaeda members for aiding the September 11, 2001 attacks. Charges were announced by Brigadier General Thomas W. Hartmann on February 11, 2008 at a press conference hosted by the Pentagon. The men charged are Khalid Sheikh Mohammed, Walid bin Attash, Ramzi bin al-Shibh, Ammar al-Baluchi, and Mustafa Ahmad al Hawsawi.