The XB-70 Valkyrie was an experimental U.S. nuclear bomber developed in the 1950s and 1960s as a potential replacement for the B-52. Designed to fly at Mach 3 speeds and altitudes of 70,000 feet, it ...
Welcome to The Hill’s Technology newsletter{beacon} Technology Technology The Big Story Musk draws scrutiny over US contracts with Russia contact Two Democratic lawmakers are ...