The guided-missile destroyer USS John Finn (DDG 113), front, and the Royal Australian Navy destroyer HMAS Hobart (DDG 39) conduct naval formations off the coast of Oahu, Hawaii.

PACIFIC OCEAN (Sep. 21, 2018) The guided-missile destroyer USS John Finn (DDG 113), front, and the Royal Australian Navy destroyer HMAS Hobart (DDG 39) conduct naval formations off the coast of Oahu, Hawaii, Sept. 21, 2018. The two ships cooperated in a variety of ship maneuvers as part of the "Mateship" festivities to commemorate the 100 year anniversary since the two nations fought side by side in 1918 during World War I. (U.S. Marine Corps photo by Sgt. Jesus Sepulveda Torres) File# 180921-M-UG171-1002