
NATIONAL HARBOR, Md. -- The program manager for the Columbia-class ballistic missile submarines said Tuesday while the boats have almost no margin for delays, he believes the submarines will be ready in time and that additional inspections of suppliers will continue. At the top of his presentation here at the Navy league’s annual Sea Air Space Expo, Capt. John Rucker, program manager for the Columbia-class ballistic missile submarine, said bluntly “we really have no margin for the lead ship, as…