Al-Qaeda operative Zacarias Moussaoui flies to the US. Three days later, he starts flight training at the Airman Flight School in Norman, Oklahoma. (Other Islamic extremists had previously trained at the same flight school or other schools in the area (see September 1999)). He trains there until May, but does not do well and drops out before getting a pilot’s license. His visa expires on May 22, but he does not attempt to renew it or get another one. He stays in Norman, arranging to change flight schools, and frequently exercising in a gym. [MSNBC, 12/11/2001; US Congress, 10/17/2002] According to US investigators, would-be hijacker Ramzi Bin al-Shibh later says he meets Moussaoui in Karachi, Pakistan, in June 2001 (see June 2001). [Washington Post, 11/20/2002]