Miami - Adm. Craig S. Faller, USN, right, incoming commander of U.S. Southern Command, addresses the audience during the change of command ceremony change of command ceremony held at SOUTHCOM's headquarters in Miami, Fla. Monday, November 26, 2018. Sharing the stage with Adm. Faller are Secretary of Defense James Mattis, left, and outgoing commander of SOUTHCOM, Adm. Kurt Tidd, USN (retired).