Lt. j.g. Margaret Morton, assigned to the guided missile destroyer USS Mustin (DDG 89), uses an alidade to take a bearing from the ship's port bridge wing. Mustin is part of the George Washington Carrier Strike Group based out of Yokosuka, Japan, and is conducting a patrol of the western Pacific in support of regional security and stability of the Asia-Pacific region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Devon Dow)