Description:The Arleigh Burke-class guided missile destroyer has been in service with the US. Navy since 1991, with construction divided between Northrop Grumman Ship Systems (formerly Litton Ingalls Shipbuilding) in Pascagoula, Miss., and General Dynamics Bath Iron Works in Maine. The first 21 ships in the class -DDG 51 through DDG 71 - are categorized as Flight I, the next seven - DDG 72 through DDG 78 - as Flight II, and those from DDG 79 on as Flight IIA. The USS Michael Murphy (DDG 112) was to have concluded a build of 62 Arleigh Burke destroyers. However, following cancellation of the DDG 1000 program after the completion of only two vessels, the Navy plans to continue Arleigh Burke construction at least through USS Chandler (DDG 116). Flight IIA improvements over previous flights include hangars for two SH-60B/F LAMPS III (Light Airborne Multipurpose System) Seahawk helicopters, new combat systems software, an enlarged flight deck, the Evolved Sea Sparrow Missile, the Kingfisher mine detection sonar, a Kollmorgen optronic sight, and an upgraded Aegis 7.1R combat system. DEPOSITили