180624-M-RT059-0419 BALTIC SEA (June 24, 2018) The Harpers Ferry-class dock landing ship USS Oak Hill (LSD 51) participates in a multinational ship formation during the celebration of the Polish navy's 100th birthday. Oak Hill is homeported in Virginia Beach, Va., and is conducting naval operations in the U.S. 6th Fleet area of operations. (U.S. Marine Corps photo by Staff Sgt. Dengrier M. Baez/Released)