Evan Lollis, with the 556th Software Engineering Squadron, lifts the jig and palm pieces of a prosthetic arm from the plate of a 3-D printer. Members of the squadron collaborated with students from Mount St. Mary's High School who are working with e-Nable Foundation, which offers 3-D printing of assistive devices for low income children with malformed hands and/or wrists. (U.S. Air Force photo/Kelly White)