Based on the authorized biography 'First Man: A Life Of Neil A. Armstrong' by James Hansen. NASA historian James R. Hansen got rare direct access to Armstrong, a test pilot-turned-astronaut who was so driven to reach the moon and play the role of American hero that he became known as 'the Ice Commander.' Armstrong had a family tragedy before Apollo that turned him into this driven astronaut, and he became such a perfect hero that while Buzz Aldrin was announced to be the first man on the moon, NASA reversed its decision because Neil was regarded as more heroic. Armstrong returned from the moon as one of the most famous men on Earth but didn't capitalize on it with a political career or endorsements. He reconnected with his family, shut out the world and became an intensely private man.