U.S. Air Force Airmen assigned to the 20th Civil Engineer Squadron explosive ordnance disposal flight fly on a UH-60 Black Hawk helicopter assigned to McEntire Joint National Guard Base at Shaw Air Force Base, S.C., Aug. 20, 2018. The Airmen began a four-day exercise simulating deployed conditions and operations. (U.S. Air Force photo by Airman 1st Class Benjamin Ingold)