U.S. Navy ships assigned to Ronald Reagan Carrier Strike Group joined ships of Japan Maritime Self-Defense Force (JMSDF) Escort Flotilla 1, Escort Flotilla 4, and the Royal Canadian Navy, while aircraft from the U.S. Navy, U.S. Marine Corps, U.S. Air Force, JMSDF and Japan Air Self Defense Force fly in formation during "Keen Sword 21", a military exercise.
