U.S. Air Force Maj. Doug Dinkins, 435th Security Forces commander, briefs evaluators and observers about exercise Frozen Defender in Grostenquin, France, Jan. 14, 2020. Frozen Defender tests the squadron’s capabilities in a contested environment under harsh conditions. The evaluators and observers provided feedback to strengthen the Defenders’ proficiencies. (U.S. Air Force photo by Staff Sgt. Devin Boyer)
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