Defender Challenge
U.S. Air Force Capt. Nathan Spradley, 902nd Security Forces Squadron operations officer, climbs an obstacle at Joint Base San Antonio-Camp Bullis, Texas in preparation for the 2018 Defender Challenge, July 23, 2018. The competition will pit security forces teams against each other in realistic weapons, dismounted operations and relay challenge events. (U.S. Air Force photo by Senior Airman Stormy Archer)

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Photo by: Senior Airman Stormy Archer |  VIRIN: 170723-F-VB174-0120.JPG