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The X-51A Waverider, shown here under the wing of a B-52 Stratofortress, is set to demonstrate hypersonic flight. Powered by a Pratt & Whitney Rocketdyne SJY61 scramjet engine, it is designed to ride on its own shockwave and accelerate to about Mach 6.

Hypersonic Weapons are No Game-Changer

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To Avoid a War With China, Should America Abandon Asia?

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The X-51A Waverider, shown here under the wing of a B-52 Stratofortress, is set to demonstrate hypersonic flight. Powered by a Pratt & Whitney Rocketdyne SJY61 scramjet engine, it is designed to ride on its own shockwave and accelerate to about Mach 6.

Hypersonic Weapons are No Game-Changer

To Avoid a War With China, Should America Abandon Asia?

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To Avoid a War With China, Should America Abandon Asia?