This required the greatest peacetime mobilization in the nation’s history.

”[John F. Kennedy’s] challenge disturbed the National Aeronautics and Space Administration’s original plan for a stepped, multi-generational strategy: Wernher von Braun, NASA’s chief of rocketry, had thought the agency would first send men into Earth’s orbit, then build a space station, then fly to the moon, then build a lunar colony. A century hence, perhaps, humans would travel to Mars. Kennedy’s goal was also absurdly ambitious. A few weeks before his speech, NASA had strapped an astronaut into a tiny capsule atop a converted military rocket and shot him into space on a ballistic trajectory, as if he were a circus clown; but no American had orbited the planet. The agency didn’t really know if what the president asked could be done in the time he allowed, but it accepted the call.”

This required the greatest peacetime mobilization in the nation’s history.