U.S. Air Force Airman 1st Class Christian Paulson, 633rd Civil Engineer Squadron firefighter, participates in a live-fire training exercise at Joint Base Langley-Eustis, Virginia, Sept. 19, 2018. The burn pit at Langley Air Force Base, Virginia, is equipped with trainers for firefighters to practice response scenarios for buildings, and large and small aircraft. (U.S. Air Force photo by Staff Sgt. Areca T. Bell)