Tech. Sgt. Thomas Carozzollo (left), and Tech. Sgt. Edward Westlake, 914th Maintenance Squadron, engine specialists perform maintenance on #4 engine of a KC-135R Stratotanker July 21, 2020 at the Niagara Falls Air Reserve Station, N.Y. The tanker is undergoing a 24 month inspection. (U.S. Air Force photo by Peter Borys)