180607-N-WI626-001 Apra Harbor, Guam (June 7, 2018) Capt. David Schappert, commander, Submarine Squadron 15, left, watches Japan Maritime Self-Defense Force submarine JS Soryu (SS-501) as the submarine arrives in Guam for a port visit during a multi-national exercise off the coast of Guam. (U.S. Navy photo by Lieutenant Lauren Spaziano/Released)