Senior Airman Seth Bollmann, 436th Civil Engineer Squadron Fire Department driver operator, opens a hydrant prior to filling a firetruck’s onboard water reservoir during a fuel spill exercise April 20, 2017, at Dover Air Force Base, Del. Members of the fire department demonstrated equipment functionality and knowledge at the direction of the Wing Inspection Team evaluators. (U.S. Air Force photo by Senior Airman Aaron J. Jenne)