PHILIPPINE SEA (Jan. 22, 2022) The Arleigh Burke-class guided-missile destroyer USS Gridley (DDG 101), left, and the Japan Maritime Self-Defense Force Hyuga-class helicopter destroyer JS Hyuga (DDH 181) transit the Philippine Sea, Jan. 22, 2022. Operating as part of U.S. Pacific Fleet, units assigned to Carl Vinson and Abraham Lincoln Carrier Strike Groups, Essex and America Amphibious Ready Groups and Japan Maritime Self-Defense Force, are conducting training to preserve and protect a free and open Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist Seaman Leon Vonguyen)