Air Force Staff Sgt. Aaron Kostiuk, 435th Security Forces Squadron ground combat readiness training center instructor, provides security for his comrades while they carry a simulated casualty during exercise Frozen Defender in Grostenquin, France, Jan. 14, 2020. Frozen Defender tests the squadron’s capabilities in a contested environment under harsh conditions. While the Defenders performed sweeps on the airfield, they were confronted by opposition forces and quickly responded to neutralize the threat. ( Air Force photo by Staff Sgt. Devin Boyer)

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Size: 1936px × 1291px
Photo credit: © Operation 2021 / Alamy / Afripics
License: Licensed
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