151104-N-KM939-170 PACIFIC OCEAN (Nov. 4, 2015) Seaman Zachary Lang from Las Vegas, Nevada removes a chock and chain from an MH-60 helo from squadron HSM-71 "Raptors" during a refueling aboard guided-missile destroyer USS Stockdale (DDG 106). 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)