A new Government Accountability Office report on the Pentagon's long-term nuclear weapon modernization plans urges greater collaboration between the Air Force, Navy, Energy Department and Nuclear Weapons Council and calls for a cost estimate of the follow-on system to the Air Force's Minuteman III intercontinental ballistic missile. The Defense Department and the National Nuclear Security Administration, which falls inside DOE, largely concurred with the Sept. 20 GAO report's recommendations. The Minuteman III ICBM is expected to stay in service until...