We despise the French, we are mortally afraid of the Soviets, we do not believe the British can afford us. So that leaves the Americans.
at the end of the second world war, many of the nazi regime's engineers responsible for the infamously deadly V2 rocket surrendered to the western allies-- particularly to US intelligence.
these rocket engineers, being not ideologically driven, chose the americans as they saw them as their best chance to continue their cutting-edge research. they were not wrong.
the US military accepted them with open arms and were key in the development of cold war missiles.
but that was not the end of their contribution.
one of their key engineers, Wernher von Braun, would go on to lead a brand new agency: National Aeronautics and Space Administration (or otherwise known as NASA) and its manned space flight missions.