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Boatswainís Mate 1st Class Dennis Castro signals to launch a U.S. Marine Corps amphibious assault vehicle (AAV) assigned to Amphibious Assault Vehicle Company, Combat Assault Battalion, from the well deck of the amphibious dock landing ship USS Ashland (LSD 48) during exercise Blue Chromite. The annual exercise between the U.S. Navy and Marine Corps is designed to strengthen interoperability and increase naval integration and proficiencies in amphibious warfare.