Khalid Shaikh Mohammed (KSM) gives a course lasting one or two weeks for three operatives scheduled to take part in the 9/11 operation. Nawaf Alhazmi, Khallad bin Attash, and Abu Bara al-Taizi (a.k.a. Zohair Mohammed Said) learn how to say basic English words and phrases, read plane timetables and phone books, use the Internet, make travel reservations, rent an apartment, and use code words. In addition, they play flight simulator games, watch hijacking-themed films, and investigate visas for Southeast Asian countries. KSM also tells them what to watch for when casing a flight, for example whether flight attendants bring food into the cockpit. Khalid Almihdhar is apparently not present at the training, since he has just returned to Yemen (see November/December 1999). [9/11 Commission, 7/24/2004, pp. 157-8, 493]