A medical officer with Combat Logistics Battalion 31,

A medical officer with Combat Logistics Battalion 31, 31st Marine Expeditionary Unit, discusses information included on an inpatient medical chart with Japan Ground Self-Defense Force medical personnel during a humanitarian assistance/disaster relief observation and exchange event on White Beach, Okinawa, April 19, 2018. Marines and the JGSDF Service Members conducted the exchange to provide shared overview of capabilities for events from water purification and production, to limited medical care. The 31st MEU completed the event during Certification Exercise, the final evaluation in a series of training exercises which ensures readiness for crisis response throughout the Indo-Pacific region. (U.S. Marine Corps photo by Capt. George McArthur/Released)