Master Sgt. Tyler Conner, a combat arms instructor assigned to the 28th Security Forces, right, shows Chief Master Sgt. Calvin Williams, Air Force Global Strike Command command chief, around the combat arms training facility during a visit to Ellsworth Air Force Base, S.D., March 2, 2017. The rifle course includes real-world scenarios to make Airmen more proficient in close-quarters combat situations such as rounding corners and shooting while moving. (U.S. Air Force photo by Airman 1st Class Denise M. Jenson)
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