[PAR] [TLE] North American XB-70 Valkyrie [SEP] The North American Aviation XB-70 Valkyrie was the prototype version of the planned B-70 nuclear-armed, deep-penetration strategic bomber for the United States Air Force Strategic Air Command.  Designed in the late 1950s by North American Aviation, the six-engined Valkyrie was capable of cruising for thousands of miles at Mach 3+ while flying at 70,000 ft . [PAR] [TLE] North American Aviation [SEP] North American Aviation (NAA) was a major American aerospace manufacturer, responsible for a number of historic aircraft, including the T-6 Texan trainer, the P-51 Mustang fighter, the B-25 Mitchell bomber, the F-86 Sabre jet fighter, the X-15 rocket plane, and the XB-70, as well as Apollo Command and Service Module, the second stage of the Saturn V rocket, the Space Shuttle orbiter and the B-1 Lancer.  Through a series of mergers and sales, North American Aviation became part of North American Rockwell, which later became Rockwell International and is now part of Boeing.
[PAR] [TLE] North American XB-70 Valkyrie [ SEP ] The North American Aviation XB-70 Valkyrie was the prototype version of the planned B-70 nuclear - armed , deep - penetration strategic bomber for the United States Air Force Strategic Air Command . Designed in the late 1950s by North American Aviation , the six - engined Valkyrie was capable of cruising for thousands of miles at Mach 3 + while flying at 70,000 ft . [PAR] [TLE] North American Aviation [ SEP ] North American Aviation ( NAA ) was a major American aerospace manufacturer , responsible for a number of historic aircraft , including the T-6 Texan trainer , the P-51 Mustang fighter , the B-25 Mitchell bomber , the F-86 Sabre jet fighter , the X-15 rocket plane , and the XB-70 , as well as Apollo Command and Service Module , the second stage of the Saturn V rocket , the Space Shuttle orbiter and the B-1 Lancer . Through a series of mergers and sales , North American Aviation became part of North American Rockwell , which later became Rockwell International and is now part of Boeing .
North American Aviation created the prototype of the B-70 bomber, capable of traveling at what height?
North American Aviation created the prototype of the B-70 bomber , capable of traveling at what height ?
70,000 ft
70,000 ft