Heavy equipment and pavement specialists
Heavy equipment and pavement Airmen assigned to the 28th Civil Engineer Squadron spread gravel and asphalt on the flightline at Ellsworth Air Force Base, S.D., July 16, 2014. Heavy equipment and pavement specialists are responsible for constructing and maintaining concrete and asphalt runways, aircraft parking aprons, and roads for Ellsworth. (U.S. Air Force photo by Senior Airman Zachary Hada/Released)