The Air Force will reveal the B-21 Raider Dec. 2 during an unveiling ceremony hosted and sponsored by the Northrop Grumman Corporation at its production facilities in Palmdale, California.The B-21 is a long-range, highly survivable, penetrating strike stealth bomber that will incrementally replace the B-1 and B-2 bombers, becoming the backbone of the U.S. Air Force bomber fleet.”The unveiling of the B-21 Raider will be a historic moment for our Air Force and the nation,” said Air Force Chief of Staff Gen. CQ Brown, Jr. “We last introduced a new bomber over 30 years ago. As we look to the threats posed by our pacing challenge; we must continue to rapidly modernize. The B-21 Raider will provide formidable combat capability across a range of operations in highly contested environments of the future.”