U.S. Marines from 1st Marine Aircraft Wing, III Marine Expeditionary Force, provided a vertical replenishment (VERTREP) operation for a U.S. Navy ballistic missile submarine in the Philippine Sea, last week.Two U.S. Marine Corps CH-53E Super Stallions from Marine Heavy Helicopter Squadron (HMH) 462, 1st MAW, carried mission-essential equipment to the Ohio-class ballistic missile submarine USS Maine (SSBN 741) during its regularly scheduled patrol. Vertical replenishments enable naval vessels to quickly receive critical resources without disrupting maritime security operations while underway