Senior Airman Dustin Snyder, 28th Civil Engineer Squadron pavements and construction heavy equipment operator, uses a front-end loader to fill a crater on a simulated runway at Ellsworth Air Force Base, S.D., Sept. 30, 2015. The squadron held a speed training exercise designed to improve execution time as well as hone operation precision and performance standards, all while reviewing basic safety procedures. (U.S. Air Force photo by Airman Sadie Colbert/Released)