An announcement from the U.S. Marine Corps about resupplying an Ohio class ballistic missile submarine, or SSBN, in the Philippine Sea using CH-53E Super Stallion helicopters The sub in question is USS Maine.A ballistic missile submarine’s job isn’t to hunt enemy ships and submarines, but to lie as low and quiet as possible to deny rivals any means of tracking their movements.So, there is a change – that reflects this policy shift and highlights new concepts of operations.