NATIONAL HARBOR, MD -- Air Force Secretary Deborah Lee James acknowledged this week that the service's cost position on the Ground-Based Strategic Deterrent differs from an independent Pentagon estimate, but said the service will continually update its numbers based on industry input over the coming years. The service will settle the matter in the next program objective memorandum cycle with discussions between the Air Force, the Pentagon's cost assessment and program evaluation office, and possibly Deputy Secretary of Defense Bob...