PALMDALE, California— The U.S. Air Force is taking lessons learned from the plagued B-2 Spirit bomber development program and applying them to the next-generation B-21 Raider. While it is unknown when the B-2 will retire, the aging stealth bomber may end up flying alongside the B-21. The B-2 bomber flew its inaugural flight 30 years ago from the Plant 42 runway here. Today, the Northrop Grumman site is preparing for development of the Raider and two newly erected beige buildings have ...


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