U.S. Marines with III Marine Expeditionary Force, Alert

U.S. Marines with III Marine Expeditionary Force, Alert Contingency Marine Air Ground Task Force (ACM) standby during an ACM drill at Kadena Air Base, Okinawa, Japan, May 5, 2017. The ACM must be prepared to respond within 24 hours to crises throughout the Asian pacific region to mitigate crises, protect U.S. citizens, and territories, or counter threats to U.S. national interests as needed. (U.S. Marine Corps photo by MCIPAC Combat Camera Sgt. Scott P. Smolinksi)