 Marines of the 31st Marine Expeditionary Unit conduct humanitarian aid disaster relief operations as part of their pre-deployment certification exercise. The capabilities of the 31st Mu make it well suited for relief operations, highlighting the wide-ranging abilities of the Mu's Combat Logistics Battalion. The Combat Logistics Battalion has different unique capabilities. We can produce water, we have the ability to distribute water and fuel, produce electricity, also provide medical assistance. To test their capabilities in a simulated urban environment, Marines deliver relief supplies to a mock village populated by role-players from nearby units. Marine Sergeant Paul Robbins, Jr. Okinawa, Japan.