U.S. Navy Engineman Second Class Kira Hoy, Maritime & Intermodal Training Center Chief Engineering Course student, carefully checks her work during marine engine maintenance and repair training at Joint Base Langley-Eustis, Virginia, Sept. 1, 2020. The students must learn how to completely take apart and put the engines back together in perfect working order. (U.S. Air Force photo by Staff Sgt. Don Hudson)