363rd Training Squadron F-22 armaments apprentice course students, attach muzzles to 20mm gattling guns at Sheppard Air Force Base, Texas, Oct. 12, 2018. The muzzle helps retain the barrels' individual movement keeping them straight when firing, making sure all 6,000 rounds per minute hit their target. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)

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Photo by: Airman 1st Class Pedro Tenorio |  VIRIN: 181012-F-YT646-1028.JPG