Buzz Aldrin while Command Module Pilot Michael Collins remained in lunar orbit. A Presbyterian elder, Aldrin became the first person to hold a religious ceremony on the Moon when he privately took communion. Upon leaving NASA in 1971, he became Commandant of the U.S. Air Force Test Pilot School. He retired from the Air Force in 1972, after 21 years of service. His autobiographies "Return to Earth," (1973) and "Magnificent Desolation" (2009), recount his struggles with clinical depression and alcoholism in the years after leaving NASA. He continued to advocate for space exploration, particularly a manned mission to Mars, and developed the
Buzz Aldrin awarded an oak leaf cluster in 1972 in lieu of a second Distinguished Service Medal for his role in both the Korean War and in the space program, and the Legion of Merit for his role in the Gemini and Apollo programs. During a 1966 ceremony marking the end of the Gemini program, Aldrin was awarded the NASA Exceptional Service Medal by President Johnson at LBJ Ranch. He was awarded the NASA Distinguished Service Medal in 1970 for the Apollo 11 mission. Aldrin was an inductee of the International Space Hall of Fame (1982), U.S. Astronaut Hall of Fame in