191108-N-ON977-0044 NORFOLK (Nov. 8, 2019) Cmdr. Matthew Horton renders a salute as he is welcomed to the change of command ceremony for the future Virginia-class fast-attack submarine Pre-Commissioning Unit (PCU) Delaware (SSN 791) at Naval Station Norfolk in Norfolk, Virginia, Nov. 8, 2019. Horton relieved Capt. Brian P. Hogan as commanding officer of PCU Delaware. The 377-foot long, 7,8000-ton Delaware is a Virginia-class fast-attack submarine and is scheduled to be commissioned in the spring of 2020. (U.S. Navy photo by Mass Communication Specialist 2nd Class Alfred A. Coffield/Released)