U.S. Air Force Staff Sgt. Brandon Tonnar, combat readiness school instructor assigned to the 644th Combat Communications Squadron, tests a student’s response to being attacked on North West Field, Guam, April 9, 2021. Tonner was one of several instructors leading exercise Dragon Forge 2021. Exercise DF is a combat skills training course that prepares participants to deploy to austere locations. (U.S. Air Force photo by Tech. Sgt. Esteban Esquivel)
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