U.S. Army Warrant Officer Lewis Bryce, 2nd Staff and Faculty Company Marine Engineering Officer Basic Course student, gathers tools to perform a tune-up on a diesel Landing Craft Utility-2000 generator at Fort Eustis, Va., May 21, 2015. Tune-ups are annual services performed on generators as well as for most other Army vessels and boat generators. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)