Classified Report On Hypersonics Says U.S. Lacking Urgency

Credit: AW&ST Art Department Concept
Less than four years ago, it seemed that the U.S. Air Force was on the brink of developing the first generation of air-breathing high-speed strike weapons following the success of the experimental scramjet-powered Boeing X-51A. Now a classified report warns that the U.S. may be losing its lead in...

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