PACIFIC OCEAN (Nov. 7, 2015) A trident II D-5 ballistic missile is launched from the Ohio-class ballistic missile submarine USS Kentucky (SSBN 737) during a missile test at the Pacific Test Range. The launch, the 156th successful test flight of an unarmed Trident II D5 missile, was part of a Demonstration and Shakedown Operation (DASO) in the Pacific Test Range to validate the readiness and effectiveness of an SSBN?s crew and weapon system. (U.S. Navy photo/Released)