After six years of active duty , including a stint as a military police officer , Hatton joined the FBI in New Orleans in 1985 , and worked briefly in a small Louisiana office . In 1991 , he was assigned to New York City as a member of an investigative team working on a bank robbery case . Leonard Hatton 's main job was an FBI specialist in explosives and evidence recovery , where he worked until his death . In addition to cracking a number of high-profile bank robbery and kidnapping cases , he investigated international terrorist attacks such as the 1993 World Trade Center bombing , the 1998 United States embassy bombings , and the 2000 USS Cole bombing . Three months before the September 11 attacks , he had testified in the trial of a follower of the Islamic terrorist group al-Qaeda
1993 World Trade Center bombing
1993 World Trade Center bombing
Leonard W. Hatton Jr.