Osan test their ATSO during Beverly Herd 16-2
An opposing forces member advances their position while testing 51st Communications Squadron Airmen’s ability to defend their building at Osan Air Base, Republic of Korea, Aug. 25, 2016. The attack from opposing forces was a scenario during Exercise Beverly Herd 16-2 designed to test the 51st CS defensive capabilities. (U.S. Air Force photo by Staff Sgt. Jonathan Steffen)

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Photo by: Staff Sgt. Jonathan Steffen |  VIRIN: 160825-F-UI176-169.JPG