U.S. Air Force Staff Sgt. Aaron Vanley, 633rd Security Forces Squadron base defense operations center controller, speaks tactics with fellow Air Combat Command security forces members during the Defender Challenge team selection at Joint Base Langley-Eustis, Virginia, Aug. 20, 2018. Six Airmen were chosen to represent ACC during the 2018 Air Force Defender Challenge in the hopes of winning the Sadler Cup, which is named after Maj. Gen. Thomas Sadler, who served as Air Force Chief of Security Police from 1975-1977. (U.S. Air Force photo by Staff Sgt. Areca T. Bell)
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