Joseph Pfeifer made history on September 11, 2001, as the first Fire Department of New York (FDNY) chief to enter the World Trade Center following the terrorist attacks. His decision to go inside the collapsing towers was part of an effort to establish a command post to coordinate rescue operations. Pfeifer, who had spent decades in the FDNY, was deeply involved in the response to the unprecedented crisis that day. As he entered the south tower, Pfeifer was met with chaos and uncertainty. The building was already severely damaged, and the situation was rapidly deteriorating. He worked to organize the efforts of the firefighters still inside, trying to ensure that as many as possible could be safely evacuated. His actions that day would become a defining moment in the FDNY's response to the attacks. One of the most painful memories for Pfeifer was the moment he saw his younger brother, Kevin Pfeifer, a fire lieutenant, before Kevin entered the north tower. It was their last encounter. Kevin, like so many other firefighters, chose to stay behind to help others escape, ultimately losing his life in the tragedy. He was one of 343 firefighters who died in the attacks, a sacrifice that remains deeply etched in the memory of the FDNY and the nation. Joseph Pfeifer has since spoken publicly about the events of that day, honoring his brother and the countless others who gave their lives. His experience as the first FDNY chief inside the World Trade Center on 9/11 serves as a powerful reminder of the bravery and sacrifice of first responders during one of the most devastating days in American history.