If you’re reading this and you were born after about 1945, it’s a near-certainty that you spent much of your youth building ...
National Security Journal on MSN
SR-72: The Air Force’s New Hypersonic Bomber?
The SR-72 “Darkstar” is envisioned as a Mach-6, air-breathing ISR platform—but could it strike? -Hypersonic speed complicates ...
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