Neil Alden Armstrong (August 5, 1930 – August 25, 2012) was an American astronaut, test pilot, aerospace engineer, university professor and United States Naval Aviator. He was the first person to walk on the Moon. Before becoming an astronaut, Armstrong was a United States Navy officer and had served in the Korean War. After the war, he served as a test pilot at the National Advisory Committee for Aeronautics High-Speed Flight Station, now known as the Dryden Flight Research Center, where he logged over 900 flights. He graduated from Purdue University and the University of Southern California.
Armstrong flew 78 missions over Korea for a total of 121 hours in the air, most of which were in January 1952. He received the Air Medal for 20 combat missions, a Gold Star for the next 20, and the Korean Service Medal and Engagement Star. Armstrong left the Navy at the age of 22 on August 23, 1952, and became a Lieutenant, Junior Grade in the United States Naval Reserve. He resigned his commission in the Naval Reserve on October 21, 1960.