The Associated Press In this Jan. 9, 2008 photo released by the U.S. Navy, the Ohio-class ballistic-missile submarine USS Wyoming approaches Naval Submarine Base Kings Bay, Ga. Nuclear-armed U.S. submarines that went more than a decade without calling on foreign ports in part because of post-Sept. 11 security concerns are once again visiting other countries, a shift intended to underscore their global presence and lift sailor morale.