National Security Journal on MSN

The Mach 3.08 XB-70 Valkyrie Bomber Has a Message for the U.S. Military

The XB-70 Valkyrie was born from a simple Cold War idea: fly so high and fast that nothing could touch you. North American’s Mach 3 giant pushed materials, aerodynamics, and engines to their limits ...
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The XB-70 Didn’t Just Fly Mach 3 It Surfed on Its Own Shockwaves

The XB-70 Valkyrie wasn’t just fast—it rode the very shockwaves it generated. Its folding wingtips harnessed compression lift, letting the 6-engine bomber surf supersonically through the stratosphere.