U.S. Air Force Col. Barry Cornish, 99th Air Base Wing commander, presents Staff Sgt. William O'Brien, 99th Security Forces Squadron security forces craftsman, with the Air Force Achievement Medal March 1, 2013 at Nellis Air Force Base, Nev. Staff Sgt. O'Brien was awarded the Air Force Achievement Medal for identifying an Airman with a life threatening condition and rushing him to the Mike O'Callaghan Federal Medical Center. (U.S. Air Force photo by Staff Sgt. William P. Coleman)
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