U.S. Marine Corps Cpl. Samuel Stonestreet, ground radio

U.S. Marine Corps Cpl. Samuel Stonestreet, ground radio repairman, and Lance Cpl. Josiah Beeman, machinist, 1st Maintenance Battalion, Combat Logistics Regiment 15, 1st Marine Logistics Group, 1 Marine Expeditionary Force, watch an Invent3D printer print a simple shape during a hands on training class on Camp Pendleton, CA., March 30th, 2016. The hands on class is part of the Expeditionary Manufacturing Mobile Test-Bed Project which is a prototype mobile facility designed to support the continuous experimentation of advanced manufacturing tactics, techniques and procedures under actual operational or combat conditions. (Marine Corps photo by Sgt. Rodion Zabolotniy, Combat Camera/ RELEASED)