National Security Journal on MSNOpinion

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

The North American XB-70 Valkyrie embodied a once-dominant creed: outrun defenses at Mach 3 and 70,000 feet. -The prototype ...
Dark Skies Official on MSN

XB-70 Valkyrie: Mach 3 Nuclear Bomber

As part of a plan to build a strategic bomber for deep penetration and nuclear bombing runs during the Cold War, North American Aviation created a stunningly futuristic prototype for its time: the ...