U.S. Air Force 1st Lt. Margaret Haley, 20th Civil Engineer Squadron explosive ordnance disposal flight commander, performs pushups during a Warrior Day challenge hosted by the 20th Medical Group at Shaw Air Force Base, S.C., Sept. 29, 2017. The day’s challenges included physical tests such as pushups, burpees and running. (U.S. Air Force photo by Airman 1st Class Kathryn R.C. Reaves)