A .50-caliber bullet and a 7.62mm bullet rest in fron of a Barret M107 caliber rifle at Coulee Dam, Washington, Sept. 26, 2018. Airmen from the 92nd Civil Engineer Squadron explosive ordinance team underwent familiarization training with the Barret M107 caliber rifle as part of their annual weapons qualification. (U.S. Air Force photo/Airman 1st Class Lawrence Sena)

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Photo by: Airman 1st Class Lawrence Sena |  VIRIN: 180926-F-WH061-225.JPG