U.S. Navy Aviation Machinist's Mate 3rd Class Christopher O. Ellis performs maintenance on an MH-60R Seahawk helicopter aboard the guided missile cruiser USS San Jacinto (CG 56) in the Arabian Gulf Dec. 15, 2013. The San Jacinto was part of the Harry S. Truman Carrier Strike Group and was underway in the U.S. 5th Fleet area of responsibility supporting maritime security operations and theater security cooperation efforts. (U.S. Navy photo by Mass Communication Specialist 3rd Class Preston Paglinawan/Released)