150808-N-EH218-279 PACIFIC OCEAN (Aug. 8, 2015) The guided-missile destroyer USS Chung-Hoon (DDG 93) fires its Mk-45 five-inch gun during an integrated live-fire exercise. The John C. Stennis Carrier Strike Group is undergoing a composite training unit exercise and joint task force exercise, the final step in certifying to deploy. (U.S. Navy photo by Mass Communication Specialist 2nd Class Ryan J. Batchelder/Released)