SUSAN WALSH/AP
FBI agent Kenneth Williams


July 8, 2001
Atta travels to Spain and meets with several men, including former roommate Ramzi Binalshibh, who arrives there from Hamburg. Atta returns to Miami July 19. The remaining hijackers, who will control passengers while their partners fly, begin to arrive in Florida.

July 10, 2001
Phoenix, Ariz., FBI agent Kenneth Williams sends headquarters a memo about Middle Eastern students at an Arizona flight school, theorizing al-Qaeda could be trying to infiltrate U.S. aviation. Analysts at headquarters defer action on his concerns. The memo never gets past two mid-level unit chiefs.

July 20-23, 2001
Bush goes to the G-8 summit in Genoa. Antiaircraft missiles and a U.S. warship stand guard. On the last day, he meets with the Pope at his vacation residence because the Vatican is considered a possible target.

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  From the Aug. 12, 2002 issue of TIME Magazine; posted Sunday, Aug. 4, 2002
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