National Security Journal on MSN
The X-15 Hit Mach 6.7 and Put Every Military on Earth On Notice
In 1967, USAF Major “Pete” Knight set a world speed record that remains “unbroken” 68 years later. -Flying the X-15A-2 rocket ...
The unarmed Minuteman III intercontinental ballistic missile (ICBM) launched from Vandenberg Space Force Base in California.
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