U.S. Air Force Staff Sgt. Trevor Harrison, 633rd Civil Engineer Squadron pavements and construction craftsman, cuts pavement with a power saw at Joint Base Langley-Eustis, Va., Sept. 25, 2017. The 633rd CES makes sure the runway is free of foreign-object debris and pavement defects for aircraft and personnel safety. (U.S. Air Force photo by Airman 1st Class Anthony Nin Leclerec)