A defender with the Koku-JieItai moves throughout a mock-village in urban-combat training during Pacific Defender 21-1 at Andersen Air Force Base, Guam, January 26, 2021. This long-standing exercise pre-empts Cope North 21 and is designed to enhance multilateral air operations among security forces of the U.S. Air Force, the U.S. Navy, U.S. Marine Corps, Japan Air Self Defense Force and Royal Australian Air Force. (U.S. Air Force photo by Senior Airman Amir R. Young)