Air Force Senior Airman Brian Dawn, a tactical air control party specialist assigned to the 3rd Air Support Operations Squadron, signals that he is finished zeroing his weapon during live-fire sustainment training at Joint Base Elmendorf-Richardson, Alaska, Sept. 28, 2017. During the live-fire training exercise the 3rd ASOS Airmen honed their marksmanship skills and practiced firing from various positions utilizing the M9 pistol and M4 carbine. Dawn is a native of Salem, Ore.

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