181205-N-GC639-1038 INDIAN OCEAN (Dec. 5, 2018) The guided-missile destroyer USS Spruance (DDG 111) fires its 5-inch/54-caliber Mark 45 lightweight gun during a live-fire exercise in the Indian Ocean, Dec. 5, 2018. The John C. Stennis Carrier Strike Group is deployed to the U.S. 5th Fleet area of operations in support of naval operations to ensure maritime stability and security in the Central Region, connecting the Mediterranean and the Pacific through the western Indian Ocean and three strategic choke points. (U.S. Navy photo by Mass Communication Specialist 1st Class Ryan D. McLearnon/Released)