A chess set printed by the Gerrity Memorial Library's 3-D printer sits on a table at Hill Air Force Base, Utah, July 26, 2018. Visitors can bring in 3-D printer programs and have their projects printed by library staff. (U.S. Air Force photo by R. Nial Bradshaw)

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Photo by: r. nial bradshaw |  VIRIN: 180726-F-OD616-0007.JPG