U.S. Marines with Headquarters and Headquarters Squadron, Marine Corps Air Station Iwakuni, create a shield barrier as a response to a simulated riot during exercise Keen Sword 25 at MCAS Iwakuni, Japan, Oct. 25, 2024. KS 25 is a biennial, joint and bilateral field-training exercise involving U.S. military and Japan Self-Defense Force personnel, designed to increase readiness and interoperability while strengthening the ironclad U.S.-Japan alliance. (U.S. Marine Corps photo by Sgt. Isaac Orozco)