a Fire Helmet belonging to Chief Joseph Pfeifer. This object is now part of the National September 11 Memorial & Museum in New York. More photos, and stories about those objects, below (source: REUTERS). A related news item about the museum is here. Joseph Pfiefer, the battalion chief of Engine 7, Ladder 1, was on a routine call in downtown Manhattan when he heard the roar of American Airlines Flight 11 passing overhead on course for the North Tower of the World Trade Center. His unit was one of the first to arrive at the scene, and he set up a command center in the North Tower's lobby. That day, he was being followed by two French filmmaker brothers, Jules and Gedeon Naudet, and their footage from the scene shows Pfiefer's brother Kevin, also a firefighter in a different unit, preparing to head upstairs for the unfolding rescue mission. When the South Tower collapsed, Pfiefer radioed evacuation orders to his officers in the North Tower. Pfiefer, along with the rest of Ladder 1, survived that day. His brother did not. The museum, which occupies seven stories below the ground of the World Trade Center site--is still being built at the site of the fallen towers. It is due only to open in 2012, on the 11th anniversary of the attacks. Blood-stained shoes worn by Linda Lopez as she evacuated from the 97th Floor of Tower 2 on September 11, 2001. She was at work at the Fiduciary Trust Company on the South Tower's 97th floor when the first plane crashed into North Tower, sending a fireball past their window and radiating a heat that she said felt like being sunburned. A recovered FDNY Squad 252 helmet belonging to deceased FDNY member Kevin M. Prior is seen in this photograph before becoming a part of the National September 11 Memorial & Museum in New York August 22, 2011. Kevin Prior, a firefighter with Brooklyn's Squad 252, can be seen in video footage of the North Tower lobby recorded after the first plane hit getting ready to go upstairs. Responding to a mayday call sent out by fellow firefighters encountering breathing problems, he and five other members of the squad are thought to have been on a floor in the 20s when the tower collapsed.