354th SFS Mark 19 training
Airman Jeffery Gibson, a 354th Security Forces Squadron response force member, fires a Mark 19 grenade launcher Sept. 9, 2015, at Eielson Air Force Base, Alaska. To be qualified on the weapon members of the squadron must show proficiency annually. (U.S. Air Force photo by Staff Sgt. Shawn Nickel/Released)

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Photo by: Staff Sgt. Shawn Nickel |  VIRIN: 150909-F-FT438-264.JPG