1965 B-70 - First bomber to achieve Mach 3

FLYING HIGHER, FASTER
North American Aviation, a Boeing heritage company, won a contract to build two prototype bombers capable of flying higher and faster than ever before, in order to avoid intercept vehicles over the Soviet Union. North American created the six-engine XB-70. The aircraft could fly Mach 3 (2,000 miles per hour) at more than 77,000 feet. This new capability would have allowed the B-70 to outrun any fighter jet, and fly above any surface-to-air missiles on its nuclear mission. Shortly after testing began, the United States Air Force introduced its first Intercontinental Ballistic Missiles, and the program was disbanded.