The 51st Medical Group nurses treat a patient with a simulated sucking chest wound during a mass casualty exercise on Osan Air Base, Republic of Korea, Feb.13, 2013. The exercise was conducted during operation readiness exercise Beverly Bulldog 13-02 to help Osan airmen sharpen their medical response skills.  (U.S. Air Force photo/Staff Sgt. Emerson Nuñez)
Staff Sgt. Emerson Nuñez
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