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Mark Carson, an Arnold Engineering Development Complex lead machinist at Hyper-Ballistic Range G, slides a section of the 8-inch barrel for the Range G gun farther into the test tank to be connected and aligned with another section March 22, 2021, at Arnold Air Force Base, Tenn. (U.S. Air Force photo by Jill Pickett)
24.0-70.0 mm f/2.8
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