For decades, the B2 Spirit was the ultimate symbol of American air power—an unrivaled stealth bomber that could slip past enemy defenses and strike anywhere on Earth. But it was also breathtakingly expensive, fragile, and built in such tiny numbers that it became more of a burden than a weapon.Now comes the B21 Raider. Smaller, lighter, and cheaper—but designed to be built in numbers. Is this truly the future of U.S. air power? Or just a “B2 Lite”?