LIVERMORE, California, Jan. 13 -- The U.S. Department of Energy's Lawrence Livermore National Laboratory issued the following news release: The W80-4 Life Extension Program team in November successfully executed the Preliminary Design Review and Acceptance Group (PDRAAG) review at the Air Force Nuclear Weapons Center on Kirtland Air Force Base in Albuquerque, New Mexico. Review by the PDRAAG is a critical mid-program review with the Department of Defense to show the warhead baseline design com  more