Augment security
Staff Sgt. Gregory Johnson, 51st Medical Squadron dental technician base augmentee, stands guard outside the medical group emergency entrance during a training scenario at Osan Air Base, Republic of Korea, March 21, 2013. These types of training scenarios are a part of Operational Readiness Exercise Beverly Midnight 13-02 that help Airmen sharpen their skills in case of a real world contingency. (U.S. Air Force photo/Senior Airman Alexis Siekert)