Congressional investigators have uncovered new costs associated with the Ground-based Midcourse Defense program that would bring the running tab for the acquisition of long-range, guided-missile interceptors to $67 billion, 63 percent higher than the Missile Defense Agency's $41 billion estimate. The new tally, revealed in the Government Accountability Office's annual report on the Ballistic Missile Defense System published May 30 , places the GMD program -- designed to protect the United States from North Korean and Iranian intercontinental ballistic missile...