181104-N-XA496-0002 PHILIPPINE SEA (Nov. 4, 2018) Sailors standby as the Navy's forward-deployed aircraft carrier USS Ronald Reagan (CVN 76) prepares to conduct a refueling-at-sea with the fleet replenishment oiler USNS Tippecanoe (T-AO 199) during exercise Keen Sword 19. Keen Sword is a joint, bilateral field-training exercise involving U.S. military and Japan Maritime Self-Defense Force personnel, designed to increase combat readiness and interoperability of the Japan-U.S. alliance. (U.S. Navy photo by Mass Communication Specialist 3rd Class Kyleigh Williams/Released)