As the Lunar Module Pilot on Apollo 11, Aldrin was one of the first two humans to land on the Moon, and the second person to walk on it. He set foot on the Moon at 03:15:16 on July 21, 1969 (UTC), following mission commander Neil Armstrong. He is a former U.S. Air Force officer with the Command Pilot rating.
This copy of his book, "No Dream Is Too High" has been signed on the inside cover page in blue pen by astronaut Buzz Aldrin.