Master Sgt. Chambers Retires
U.S. Air Force Master Sgt. Eric Chambers, U.S. Air Forces Central armament systems functional manager, receives his certificate of retirement from Lt. Col. Kevin Umbaugh, AFCENT aircraft and munitions maintenance chief, Shaw Air Force Base, S.C., June 28, 2013. A certificate of retirement is received in most cases after serving 20 or more years in the military. (U.S. Air Force photo by Airman 1st Class Ashley L. Gardner/Released)