Neil Armstrong was an astronaut.
The Command/Service Module ( CSM ) was one of two spacecraft , along with the Lunar Module , used for the United States Apollo program which landed astronauts on the Moon . David Scott . , is an American former NASA astronaut , retired U.S. Air Force officer and former test pilot . Neil Alden Armstrong ( August 5 , 1930 -- August 25 , 2012 ) was an American astronaut and the first person to walk on the Moon . He performed the first docking of two spacecraft , with pilot David Scott .