"The people closest to the problem are also the people closest to the solution," Capt. Chris Wood, co-lead for Additive Manufacturing with the US Marine Corps, told Engadget. In 2016, the USMC put that adage to the test as it launched the Logistics Innovation Challenge, a program "to solicit ideas from Marines, sailors and civilians from across the Marine Corps" that would address challenges that they face in their daily duties. And this is only the start to the US Military's additive-manufacturing aspirations. Pretty soon, everything from ammunition to autonomous vehicles could come from the Corps' cadre of 3D printers.