180520-M-AR635-036 SYDNEY (May 20, 2018) The Royal Australian Navy Canberra-class landing helicopter dock ship HMAS Adelaide (L01) departs Sydney Harbor May 21, 2018. U.S. Marines and Australian Defence Force members set sail aboard the Australian Flagship HMAS Canberra together with Adelaide as part of Exercise Sea Series. Sea Series consists of three exercises consisting of command exercises and practicing amphibious capabilities. (U.S. Marine Corps photo by Staff Sgt. Daniel Wetzel/Released)