A firefighter from the 8th Civil Engineer Squadron turns a water gauge from a fire truck during a simulated F-16 Fighting Falcon hydrazine leak at Kunsan Air Base, Republic of Korea, Nov. 4, 2021. The firefighters and 8th Maintenance Squadron aircraft fuels systems specialists responded to the emergency training, rescued the fighter pilot and contained the hazardous material. (U.S. Air Force photo by Staff Sgt. Mya M. Crosby)