The computer numerical controlled machining system completes an early prototype design of a valve stem cover at the Rapid Equipping Force Expeditionary Lab at Forward Operating Base Salerno, May 7, 2013. The valve stem covers are currently being tested on a mine-resistant ambush-protected vehicle, which had been immobilized by flat tires caused by broken valve stems multiple times in theater. The lab’s engineers rapidly produce prototype solutions for issues that hamper soldiers’ performance and safety in the field, thus increasing their capabilities. (U.S. Army National Guard photo by Spc. Mark VanGerpen, 129th Mobile Public Affairs Detachment/RELEASED)