190526-N-QD718-0005 PHILIPPINE SEA (May 26, 2019) The Arleigh-Burke-class guided-missile destroyer USS Curtis Wilbur (DDG 54) launches a harpoon surface-to-surface missile as part of a Harpoon missile exercise during Pacific Vanguard (PACVAN). PACVAN is the first of its kind quadrilateral exercise between Australia, Japan, Republic of Korea, and U.S. Naval forces. Focused on improving the capabilities of participating countries to respond together to crisis and contingencies in the region, PACVAN prepares the participating maritime forces to operate as an integrated, capable, and potent allied force ready to respond to a complex maritime environment in the Indo Pacific region. (U.S. Navy photo by Mass Communication Specialist 1st Class Toni Burton/Released)