151111-N-KM939-213 PACIFIC OCEAN (Nov. 11, 2015) A 5 Inch 54-caliber lightweight gun fires a round on the foc'sle of the guided-missile destroyer USS Stockdale (DDG 106) during a Missile Exercise (MSLEX). Sailors from the John C. Stennis Strike Group are participating in a sustainment training exercise (SUSTEX) to prepare for future deployments. (U.S. Navy photo by Mass Communication Specialist 3rd Class David A. Cox/Released)