Maj. Cleveland Hayes, a Medical Readiness officer with the 446th Aerospace Medicine Squadron, out of Joint Base Lewis-McChord, Wash., has been a Medical Service Corps officer since 2000, after enlisting into the active-duty Air Force in 1992. He said his squadron is responsible for performing about 200 patient physicals during Reserve weekends, which he helps facilitate to ensure unit operations run smoothly. (U.S. Air Force Reserve photo by Master Sgt. Jake Chappelle)