John Michael Richardson is a retired four-star admiral in the United States Navy who previously served as the 31st Chief of Naval Operations. He served as the Director of the Naval Nuclear Propulsion Program from November 2, 2012, to August 14, 2015. While serving as Director of Naval Nuclear Propulsion, itself a joint Department of Energy and Department of Navy organization, Richardson was responsible for the command and safe, reliable operation of the United States Navy's nuclear propulsion program and for all the current United States naval reactors deployed for usage as well as all facilities needed to ensure safe operations.