Sgt. Adrian Willis, a computer and telephone technician with Combat Logistic Battalion 31, 31st Marine Expeditionary Unit, explains the functions of a 3-D printer aboard the USS Wasp while underway in the Pacific Ocean, March 22, 2018. Marines with CLB-31 are now capable of ‘additive manufacturing,’ also known as 3-D printing, which is the technique of replicating digital 3-D models as tangible objects. The 31st Marine Expeditionary Unit partners with the Navy’s Amphibious Squadron 11 to form the Wasp Amphibious Ready Group, a cohesive blue-green team capable of accomplishing a variety of missions across the Indo-Pacific.