FDNY Commissioner Salvatore J. Cassano

Firefighters and other guests salute as the Fire Department of New York's Ladder Company 3 fire truck is lowered by crane into the National September 11 Memorial Museum in New York, Wednesday, July 20, 2011. (credit: Seth Wenig, Pool/AP)

Ladder Company 3 Fire Truck Used During Evacuations On 9/11 Returns To Ground Zero

The Ladder Company 3 truck helped civilians escape from the World Trade Center’s north tower on Sept. 11, 2001. It was lowered today into exhibition space for the National September 11 Memorial and Museum.