Osan test their ATSO during Beverly Herd 16-2
Senior Airmen Darren Raines, 51st Security Forces area supervisor, aims at opposing forces during a mock attack on Osan Air Base, Republic of Korea, Aug. 25, 2016. The mock attack was a scenario in Exercise Beverly Herd 16-2 designed to test the 51st CS’s defenses. (U.S. Air force photo by Staff Sgt. Jonathan Steffen)

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Photo by: Staff Sgt. Jonathan Steffen |  VIRIN: 160825-F-UI176-233.JPG