180901-N-OM854-0059 PACIFIC OCEAN (Sept. 1, 2018) A 3D printer makes a plastic copy of a door plate aboard the Nimitz-class aircraft carrier USS John C. Stennis (CVN 74). John C. Stennis is underway conducting routine operations in the U.S. 3rd Fleet area of operations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Grant G. Grady/Released)