Marine Corps Gunnery Sgt. Mark Prado, right, an engineer chief with Combat Logistics Battalion 31, 31st Marine Expeditionary Unit, directs Sgt. Marygrace Barros, a water support technician with CLB-31, 31st MEU, to collect a water sample after a simulated natural disaster during a humanitarian assistance surveillance team exercise on Kin Blue, Okinawa, Japan, Dec. 1, 2022. A HAST evaluates the conditions of an environment, approving select locations for foreign humanitarian aid to deliver food, water, and shelter to those in need. The 31st MEU, the Marine Corps’ only continuously forward-


Marine Corps Gunnery Sgt. Mark Prado, right, an engineer chief with Combat Logistics Battalion 31, 31st Marine Expeditionary Unit, directs Sgt. Marygrace Barros, a water support technician with CLB-31, 31st MEU, to collect a water sample after a simulated natural disaster during a humanitarian assistance surveillance team exercise on Kin Blue, Okinawa, Japan, Dec. 1, 2022. A HAST evaluates the conditions of an environment, approving select locations for foreign humanitarian aid to deliver food, water, and shelter to those in need. The 31st MEU, the Marine Corps’ only continuously forward-deployed MEU, provides a ready and lethal force ready to perform a wide range of military operations as the premier crisis response force in the Indo-Pacific.


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Keywords: 31st, beach, clb-31, fha, hast, meu, survey