Designed to replace the B-52, the Valkyrie boasted speeds exceeding Mach 3 and an altitude ceiling of 70,000 feet, making it seemingly invincible to Soviet defenses. What You Need to Know ...

Today, the YF-12A remains the closest the United States has ever come to producing an armed, Mach 3-capable aircraft. On May 1st, 1960 the Soviet Union shot down a U-2 spy plane over the USSR with ...

Developed to fly at Mach 3.0, the supersonic aircraft was powered by six turbojet engines and featured advanced aerodynamics. What You Need to Know: The XB-70 Valkyrie, a Cold War-era strategic ...

The Gillette News Record hosts its annual Treat Street event from 1-3 p.m. Saturday at Cam-plex Energy Hall. Admission is free, and the event is open to the public.