The U.S. Air Force is heading back to the future, as it tries to retain competition in America’s national security space launch market while simultaneously weaning itself of the Russian RD-180-powered Atlas V rocket. In the late 1990s, the Defense Department decided against downselecting to one vendor for the Evolved Expendable Launch Vehicle (EELV) program, opting instead to back Boeing and Lockheed Martin’s competing Delta IV and Atlas V rockets, respectively, to lower costs ...


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