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U.S. Air Force Staff Sgt. Terry White, 51st Maintenance Group weapons crew team member, secures munitions on an A-10 Thunderbolt II during Exercise Beverly Herd 17-2 at Osan Air Base, Republic of Korea, May 4, 2017. The no-notice exercise challenged the tradition of planning exercises weeks or months in advance, allowing wing leadership a view of how personnel would respond in real-world situations.