The Ohio-class ballistic missile submarine USS Alaska prepares to moor at Naval Submarine Base Kings Bay, Ga., April 5, 2011. The Alaska returned to its homeport after a three-month patrol at sea. Marine Corps Gen. Joe Dunford, the chairman of the Joint Chiefs of Staff, met with some of the Alaska’s sailors during his visit to Kings Bay, May 20, 2016 Navy photo by Petty Officer 1st Clast James Kimber