Project Mercury also excluded civilian NASA X-15 pilot Neil Armstrong, though he had been selected by the US Air Force in 1958 for its Man In Space Soonest program, which was replaced by Mercury. Although Armstrong had been a combat-experienced NAP during the Korean War, he left active duty in 1952. Armstrong became NASA's first civilian astronaut in 1962 when he was selected for NASA's second group, and became the first man on the Moon in 1969. It was further stipulated that candidates should be between 25 and 40 years old, no taller than , and hold a college degree in a
Neil Armstrong "a bit Victorian in nature". At the end of the day, he was surprised to view a delayed video of the launch of Soyuz 9 as it had not occurred to Armstrong that the mission was taking place, even though Valentina Tereshkova had been his host and her husband, Andriyan Nikolayev, was on board. Shortly after Apollo 11, Armstrong announced that he did not plan to fly in space again. He was appointed Deputy Associate Administrator for Aeronautics for the Office of Advanced Research and Technology at ARPA, served in the position for a year, then resigned from it and