米海兵隊岩国航空基地

Active Shield tests mission readiness between American, Japanese forces - A U.S. Marine and a Japan Ground Self-Defense Force Soldier coordinate with each other during a chemical exposure drill as part of exercise Active Shield at Marine Corps Air Station Iwakuni, Japan, Oct. 18, 2017. Active shield is an annual exercise that tests the abilities of U.S. and Japanese forces working alongside each other to protect and defend the air station and other U.S. assets in the region. (U.S. Marine Corps photo by Lance Cpl. Stephen Campbell)

U.S. Marines and Japan Ground Self Defense Force members executed exercise Active Shield at Marine Corps Air Station Iwakuni, Japan, Nov. 10, 2016. Active Shield is an annual exercise designed to test the abilities of U.S. and Japanese forces to work alongside each other to protect and defend Marine Corps Air Station Iwakuni and other U.S. assets in the region. (U.S. Marine Corps photo by Lance Cpl. Joseph Abrego) - U.S. Marines and Japan Ground Self Defense Force members executed exercise Active Shield at Marine Corps Air Station Iwakuni, Japan, Nov. 10, 2016. Active Shield is an annual exercise designed to test the abilities of U.S. and Japanese forces to work alongside each other to protect and defend Marine Corps Air Station Iwakuni and other U.S. assets in the region. (U.S. Marine Corps photo by Lance Cpl. Joseph Abrego)