SAN DIEGO (May 18, 2015) - Vice Adm. Thomas S. Rowden, commander of Naval Surface Force, U.S. Pacific Fleet, makes his arrival on a barge via the port side accommodation ladder of the amphibious transport dock ship USS Somerset (LPD 25), during a tour visit. Somerset is undergoing a post-shakedown availability (PSA) period. The ninth San Antonio-class amphibious transport dock ship, Somerset is named in honor of the crew and passengers of United Airlines Flight 93, which crashed near Shanksville, Pa., in Somerset County during the Sept. 11, 2001 terrorist attacks. (U.S. Navy photo by Mass Communication Specialist 1st Class Vladimir Ramos/Released)