The “Tribute in Light” rises above the skyline of lower Manhattan (pictured here from the Brooklyn Heights Promenade) for the anniversary of the Sept. 11 terrorist attacks. Photo Credit: Getty Images / Drew Angerer
Among the police officers, firefighters and emergency medical personnel who rushed to the World Trade Center on the morning of Sept. 11, 2001, were thousands of others who responded.
That includes about 3,500 federal law enforcement officers, such as Federal Bureau of Investigation agents, U.S. marshals and others. In the months that followed, thousands more federal workers helped at the smoldering pile and the surrounding area.
Since the terror attack, 15 FBI agents have died of 9/11-related illnesses. Three of them died since March.