Airman 1st Class Tyler Hawkins, 28th Civil Engineer Squadron heavy equipment and pavement technician, spreads asphalt onto the flightline at Ellsworth Air Force Base, S.D., July 16, 2014 to repair runway damage. Heavy equipment specialists are responsible for paving and maintaining concrete and asphalt airstrips, operating heavy equipment, and sweeping for foreign object debris. (U.S. Air Force photo by Senior Airman Zachary Hada/Released)