Almost nothing is known about the new bomber in development, the B-21 Raider, the most important Air Force project of the new century. But it will differ from previous bombers in one critical feature: rapid upgradability, according to Air Force Gen. Tim Ray, who leads the service’s Global Strike Command. In essence, there will be
Air defense was focused on the Russians. Then it was terrorists. Now it is both. NORAD’s mission fundamentally shifted after Sept. 11, 2001, to address the threat of asymmetric terrorist attacks aimed at North America. But now North American Aerospace Defense Command is changing its focus once again, re-emphasizing advanced threats from outside the homeland.