Buzz Aldrin on July 20, Aldrin and Armstrong entered "Eagle", and began the final preparations for lunar descent. At 17:44:00 "Eagle" separated from the "Columbia". Collins, alone aboard "Columbia", inspected "Eagle" as it pirouetted before him to ensure the craft was not damaged, and that the landing gear was correctly deployed. Throughout the descent, Aldrin called out navigation data to Armstrong, who was busy piloting the "Eagle". Five minutes into the descent burn, and above the surface of the Moon, the LM guidance computer (LGC) distracted the crew with the first of several unexpected alarms that indicated that it could not complete
Edwin Eugene Aldrin Sr. a reservist until he retired from the Air Force Reserve with the rank of colonel on 1 May 1956. He later became a consultant to the manned space flight safety director of the NASA. Aldrin died in San Francisco, California, on 28 December 1974, while he was visiting his daughter there, and was buried in Arlington National Cemetery. He was survived by his sister, two daughters, and son, Buzz Aldrin. His wife Marion suffered from depression and killed herself in 1968. He is commemorated by the Edwin E. Aldrin, Sr. Award, which is presented to an Air Force Institute of