Charles Elwood "Chuck" Yeager is a retired major general in the
United States Air Force and noted test pilot. He was the first man to
break the sound barrier on October 14, 1947, flying the experimental
Bell X-1 (shown below) at Mach 1 at an altitude of 45,000 feet.

 
USAF Command Pilot Wings 

Buzz Aldrin , retired United States Air Force pilot and astronaut who was the Lunar Module pilot on Apollo 11, the first manned lunar landing in history. On July 20, 1969, he was the second human being to set foot on the Moon, following mission commander Neil Armstrong.

                                       Aldrin on the Moon