APRA HARBOR, Guam (Oct. 31, 2016) The ballistic missile submarine USS Pennsylvania (SSBN 735) prepares to moor in Apra Harbor, Guam, for a scheduled port visit. The Pennsylvania’s visit to Guam reflects the United States’ commitment to its allies in the Indo-Asia-Pacific, and complements the many exercises, training, operations and other military cooperation activities conducted between the U.S. and its partner nations. (U.S. Navy photo by Seaman Daniel S. Willoughby/RELEASED)