Airmen from the 51st Security Forces Squadron secure the wing headquarters building during the last counter surveillance scenario of an operational readiness exercise Friday, , 2013, at Osan Air Base, South Korea. Counter surveillance scenarios are conducted throughout the ORE to help security forces Airmen learn how to better secure the base and defend against opposing forces. Staff Sgt. Sara Csurilla

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Keywords: .., air, defense, force, military, united, war