 US Marines with Marine Heavy Helicopter Squadron, and 2nd Distribution Support Battalion execute a heavy external lift of a shipping container. During Operation Potomac Enforcer, at Marine Corps Outlying Landing Field Oak Grove, North Carolina. Marines with Marine Heavy Helicopter Squadron and 2nd Distribution Support Battalion rehearsed, and executed heavy external lifts throughout Operation Potomac Enforcer. The lift capability of the CH-53K King Stallion, allows for the rapid transportation of troops and equipment to austere expeditionary sites. HMH-461 is a subordinate unit of the 2nd Marine Aircraft Wing, and 2nd DSB is a subordinate unit of the 2nd Marine Logistics Group. The aviation and logistics combat elements of 2 Marine Expeditionary Force.