Player Embed Code: Download Embed Share U.S. PACOM Change of Command Micro-Content DMA Pacific - Hawaii Media Bureau May 30, 2018 | 2:29 Navy Adm. Phil Davidson takes command of U.S. Pacific Command from outgoing commander Navy Adm. Harry Harris, Jr., May 30, 2018. Defense Secretary James N. Mattis, Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff and Navy Adm. John M. Richardson, chief of naval operations, attend the ceremony at Joint Base Pearl Harbor-Hickam, Hawaii.