Squad 1 lost 12 members when the World Trade Center towers collapsed in the September 11 attacks : Squad 1 crossed the Brooklyn Bridge to respond to the attacks and was last seen in the South Tower . The door of their pumper engine was recovered and is now on display at the Smithsonian National Museum of American History . The loss of half the squad was the greatest of all FDNY units involved
September 11 attacks
September 11 attacks
New York City Fire Department Squad Company 1