U.S. Air Force Staff Sgt. Andrew Tidwell, 435th Security Forces Squadron contingency response fire-team member, tests his rifle before exercise Frozen Defender in Grostenquin, France, Jan. 14, 2020. Frozen Defender tests the squadron’s capabilities in a contested environment under harsh conditions. Tidwell and his comrades were equipped with blank rounds to improve the realism and immersion of the training. (U.S. Air Force photo by Staff Sgt. Devin Boyer)