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Mach 6 SR-72 Darkstar has 1 weapon Russia and China can't hope to match

Summary – The SR-71 Blackbird remains the fastest acknowledged crewed, air-breathing jet, a Cold War icon that relied on Mach 3-plus speed and extreme altitude to outrun threats. Since its 1990s ...
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The Air Force’s Mach 6 SR-72 ‘Son of Blackbird’ Is Real and Might Already Be Flying

Key Takeaways: The legendary SR-71 is getting a hypersonic, unmanned successor: the SR-72 "Son of Blackbird," capable of Mach 6 speeds (4,600 mph). The Mission: Unlike its predecessor, the SR-72 is ...