NEW YORK -- Navy leaders hope to bring stability to shipbuilding accounts by firmly sticking to a requirement for a 313-ship fleet and not tinkering with acquisition plans in the service's five-year spending plan, according to a senior service official. Vice Adm. Lewis Crenshaw, deputy chief of naval operations for resources, requirements and assessments, said "one of the keys to getting some confidence in the numbers is to stop changing the numbers all the time." Chief of Naval Operation Adm...