After college Evanina went to work for the General Services Administration , where he was a project manager in the new construction division . In 1996 he joined the Federal Bureau of Investigation where as a special agent he served in the violent crimes unit , the organized crime unit , and the Bank Robberies and Counterterrorism divisions . He also later served in the FBI 's National Security Branch and Counterintelligence Division . He became a certified SWAT team member as well as a certified sniper . During this time he was involved with the investigation into the hijacking of United Airlines Flight 93 on 11 September 2001 , the mail-distributed anthrax attacks also in 2001 , and the Daniel Pearl kidnapping
United Airlines Flight 93
United Airlines Flight 93
William Evanina