FIRST RESPONDERS A military bugler plays as first responders salute atop the Pentagon during the Pentagon Memorial Dedication Ceremony, Sept. 11, 2008, at the spot where American Airlines Flight 77 crashed into the building on Sept. 11, 2001, killing 59 people aboard the flight and 125 in the building. First responders are the firefighters, police officers and other rescue workers who were first on the scene that day. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 401116-Z-EXG42-124.jpg Photo Gallery