U.S. Army Sergeant Michael D. Imbus, watercraft engineer student, works on electrical math skills during his first day of training at the Maritime & Intermodal Training Center at Joint Base Langley-Eustis, Virginia, Sept. 1, 2020. The students must learn all aspects of marine maintenance from basic to advanced electrical and mechanical trouble shooting. (U.S. Air Force photo by Staff Sgt. Don Hudson)