A member of the opposing forces fires his M16 rifle at U.S. Air Force security forces airmen during a simulated attack as part of an exercise at Osan Air Base, South Korea, July 23, 2006. A member of the opposing forces fires his M16 rifle at U.S. Air Force security forces airmen during a simulated attack as part of an exercise at Osan Air Base, South Korea, July 23, 2006. SHARE: Download: Full Size (0.06 MB) Tags: Photo Essays Credit: VIRIN: 737400-O-DPT87-703.jpg Photo Gallery