NATIONAL HARBOR, MD -- Lockheed Martin is repairing the Marine Corps' Joint Strike Fighters in response to cracks found in their bulkheads during fatigue testing, Tom Burbage, Lockheed executive vice president and JSF program manager, said today. An April report by the Government Accountability Office noted that JSF program officials discovered fatigue cracks in the bulkhead of the F-35B aircraft 10 times sooner than expected, adding that "decisions about potential redesign and remanufacture are still to be determined," according to...