A comprehensive compilation of American and Russian space launchings by programs since October 1957 when the new age dawned, including all available relevant data on vehicles used, purposes of launches, and the nature of experiments performed.
Expanded production of the B-21 bomber can be accomplished at Northrop Grumman's existing Palmdale, Calif., facilities, the Air Force said. It also said test aircraft will be so simular to the production version that early examples could be used in combat if called for.