1996 (B): A paid informant, Aukai Collins, later says he worked for the FBI for four years, providing detailed information about one of the hijackers. The hijacker, Hani Hanjour, was taking flying lessons while living in Phoenix, Arizona. Collins says the FBI knew Hanjour's exact address, his phone number and even what car he drove. "They knew everything about the guy," he says. The FBI denies Collins told them anything about Hanjour, and denies knowing about Hanjour before 9/11, though they acknowledge that they paid Collins for four years to monitor the Islamic and Arab communities in Phoenix. [ABC News, 5/23/02]