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Buzz Aldrin. As lunar module pilot on the Apollo 11 mission, he and mission commander Neil Armstrong were the first two humans to land on the Moon.

https://en.wikipedia.org/wiki/Buzz_Aldrin

Buzz Aldrin
Buzz Aldrin (; born Edwin Eugene Aldrin Jr.; January 20, 1930) is an American engineer and a former astronaut and fighter pilot. As lunar module pilot on the Apollo 11 mission, he and mission commander Neil Armstrong were the first two humans to land on the Moon.
Born in Glen Ridge, New Jersey, Aldrin graduated from the United States Military Academy at West Point in 1951, with a degree in mechanical engineering. He was commissioned into the United States Air Force, and served as a jet fighter pilot during the Korean War.