U.S. Air Force Staff Sgt. Chance Cunningham, 20th Civil Engineer Squadron pavement and construction equipment craftsman, uses a road roller to compact pavement at Shaw Air Force Base, S.C., Jan. 8, 2019. The road roller was consistently driven over the pavement until it was even with any existing asphalt. (U.S. Air Force Photo by Senior Airman BrieAnna Stillman)