Private First Class Brenen Tischner, left, a Motor Transportation Operator, with 1st Transport Support Battalion, Combat Logistics Regiment 1, 1st Marine Logistics Group, attaches a fuel hose to an AMK-23 Medium Tactical Vehicle Replacement with the help of two other Marines during routine refueling maintenance on the outskirts of Marine Corps Air Station Yuma, Ariz., April 10, 2015. - Private First Class Brenen Tischner, left, a Motor Transportation Operator, with 1st Transport Support Battalion, Combat Logistics Regiment 1, 1st Marine Logistics Group, attaches a fuel hose to an AMK-23 Medium Tactical Vehicle Replacement with the help of two other Marines during routine refueling maintenance on the outskirts of Marine Corps Air Station Yuma, Ariz., April 10, 2015.