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 leave the spacecraft. The standup EVA mimicked some of the actions he would do during his free-flight EVA, so he could compare the effort expended between the two. It set an EVA record of two hours and 20 minutes. The next day Aldrin performing his free-flight EVA. He climbed across the newly installed hand-holds to the Agena and installed the cable needed for the gravity-gradient stabilization experiment. Aldrin performed numerous tasks, including as installing electrical connectors and testing tools that would be needed for Project Apollo. A dozen two-minute rest periods prevented him from becoming fatigued. His second EVA concluded