The Navy is considering the addition of two hulls to its Columbia-class ballistic missile submarine program pending a force-structure review, according to fiscal year 2027 budget documents . Shipbuilding budget books published this week reveal tentative plans to begin funding advanced procurement for SSBN-838 and SSBN-839 in FY-28, a move that would bring the total Columbia program of record up to 14 vessels. The Pentagon could further expand the program to 15 or more submarines, Robert Kadlec, assistant defense...