The XB-70 Valkyrie, a Mach 3-capable bomber developed during the Cold War, was designed to outpace Soviet air defenses. Powered by six turbojet engines, it could reach 2,076 mph at 73,000 feet.

Let's take a look at what was to be the ultimate high speed, high altitude and last manned strategic bomber: The XB-70 Valkyrie ... Bessent tells a closed-door investor summit that the tariff ...