180828-F-BG120-0168 Senior Airman Tyler Arevalo, 741st Missile Security Forces Squadron tactical response force member observes his target during shooting training Aug. 28, 2018, at Fort Harrison, Mont. Airmen will be testing their skills in realistic weapon scenarios, simulated dismounted operations and combat endurance events as part of the 2018 Air force Defender Challenge. ( Air Force photo by Airman 1st Class Tristan Truesdell)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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