Lt. Col. Kevin Golart, 436th Civil Engineer Squadron commander, swings a sledge hammer at a Keiser sled during the 2015 Fire Muster Oct. 8, 2015, at Dover Air Force Base, Del. The force needed to move the sled simulates the force needed for firefighters to gain forcible entry into a structure. (U.S. Air Force photo/Senior Airman Zachary Cacicia)
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