Senior Airman Christopher Kaffer challenges Staff Sgt. Derrick Spencer at an entry control point July 22 at Kunsan Air Base, South Korea. The Airmen are participating in a peninsula wide operational readiness exercise, BEVERLY BULLDOG 08-03, held to train U.S. forces throughout South Korea. Airman Kaffer is with the 8th Security Forces Squadron. (U.S. Air Force photo by/Senior Airman Angela Ruiz)