180815-N-JE719-0089 NORFOLK (Aug. 15, 2018) Vice Adm. Fritz Roegge, President, National Defense University, and keynote speaker, welcomes guests during the USS John Warner (SSN 785) change of command ceremony. Cmdr. William Wiley relieved Cmdr. Burt Canfield as commanding officer of USS John Warner (SSN 785). (U.S. Navy photo by Mass Communication Specialist 1st Class Jeffrey M. Richardson/Released)