Lt. Gen. Robert D. McMurry Jr., commander of Air Force Life Cycle Management Center at Wright-Patterson Air Force Base, Ohio, listens to a presentation given at America Makes on Sept. 10, 2019, in Youngstown, Ohio. McMurry visited America Makes to learn about 3D printing and additive manufacturing capabilities and potential applications for the Air Force. (U.S. Air Force photo/Senior Airman Christina Russo)