Volunteers from the 436th Maintenance Squadron aircraft hydraulic section, apply and remove cleaning compound on the fuselage and wing of a McDonnell Douglas VC-9C Aug. 25, 2020, at Air Mobility Command Museum on Dover Air Force Base, Delaware. During a two-day period, the volunteers, stripped, cleaned and polished the shiny aluminum skin of the aircraft when the museum was closed to the public. (U.S. Air Force photo by Roland Balik)