U.S. Hypersonic Missile: U.S. Secretly Tests Hypersonic Weapon

Lockheed Martin’s Hypersonic Air-breathing Weapon Concept

WASHINGTON — The U.S. Air Force tested Lockheed Martin’s Hypersonic Air-breathing Weapon Concept in March, but kept it secret to avoid increasing tensions with Russia.
 
Credit to : TOMTOm News

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