U.S. Air Force firefighters from the 366th Civil Engineer Squadron participate in a training exercise on Mountain Home Air Force Base, Idaho, Oct. 5, 2021. The purpose of Phase II training exercises is to test service members ability to survive and operate in a contested environment. (U.S. Air Force photo by Airman 1st Class Krista Reed Choate)

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Photo by: Airman 1st Class Krista Reed Cho |  VIRIN: 211005-F-UB933-0058.JPG