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BH 17-1: Security Forces “outside the wire”
Staff Sgt. William Summerfield, a 51st Security Forces Squadron base defense operations center controller, conducts an “outside the wire” perimeter check during Exercise Beverly Herd 17-1 at Osan Air Base, Republic of Korea, March 1, 2017. The 51st SFS’s mission is to maintain a secure environment and to increase combat power during exercise and real life scenarios. (U.S. Air Force photo/Airman 1st Class Gwendalyn Smith)

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Tags: AirForce
Photo by: Airman 1st Class Gwendalyn Smith |  VIRIN: 170301-F-JW012-964.JPG