170412-N-DZ075-0087 SOUTH CHINA SEA (April 12, 2017) U.S. Merchant Marine Academy Cadet Robbie Hazen, assigned to the Arleigh Burke-class guided-missile destroyer USS Stethem (DDG 63), uses a pelorus during a navigational training exercise. Stethem is on patrol in the South China Sea supporting security and stability in the Indo-Asia-Pacific region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Ryan Harper/Released)