SUBIC BAY, Philippines — A unit of Hawaii Marines is in the Philippines fielding new weapons for the first time amid simmering tensions with China. The Kaneohe-based 3rd Marine Littoral Regiment, which is in the country for the annual Exercise Balikatan, sent its new Navy-Marine Expeditionary Ship Interdiction System—better known as the NMESIS—on Saturday to the northern Batanes Islands in the Luzon Strait, just south of Taiwan. Formerly the 3rd Marine Regiment, the unit officially re-