U.S. Air Force Staff Sgt. Dozzi, left, and Staff Sgt. Warkocz, 509th Civil Engineer Squadron pavement and equipment shop supervisors, use jack hammers to break cement apart on the flightline at Whiteman Air Force Base, Mo., July 25, 2017. First, the Dirtboyz cut sections of spalled concrete with a K-12 concrete saw then jack hammer the ground to break it into small enough pieces for the airfield sweeper to remove the debris.