U.S. Air Force Staff Sgt. Dongpyo Yi, 733rd Logistics Readiness Squadron customer service supervisor, gathers trash during the 29th annual Clean the Bay Day at Joint Base Langley-Eustis, Va., June 3, 2017. The volunteer’s efforts affect the Chesapeake Bay, part of which falls along Langley Air Force Base, Va.’s, shoreline, and is one of America’s largest seafood suppliers, according to the National Park Service. (U.S. Air Force photo/Senior Airman Derek Seifert)