PHILIPPINE SEA (Oct. 31, 2018) Naval Aircrewman (Helicopter) 2nd Class Ryan Quinn, assigned to Helicopter Maritime Strike Squadron (HSM) 77, and a member of the Japan Maritime Self-Defense Force ship JS Huyuga (DDH-181) discuss an Acquisition and Cross Servicing Agreement Logistics Exchange during Keen Sword 19. Keen Sword 19 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.