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Adm. Stephen Koehler, commander, U.S. Pacific Fleet, right, and Adm. Ryo Sakai, chief of staff of the Japan Maritime Self-Defense Force (JMSDF), attend a brief in JMSDF’s Maritime Staff Office in Tokyo, April 15, 2024. Koehler met with Sakai to discuss the increasing security challenges in the Indo-Pacific and reaffirmed the U.S. Japan alliance as the cornerstone of peace, security, and prosperity in the Indo-Pacific. (Photo Courtesy of U.S. Navy)