Charlie Duke CAPCOM
An interceptor pilot before joining the NASA astronaut program in 1966, Charlie Duke was CAPCOM for Apollo 10's lunar landing rehearsal, and then Apollo 11's most famous moment. He went on to serve as backup Lunar Module Pilot for Apollo 13, and was later prime LMP for Apollo 16, with a record lunar stay of 71 hours 41 minutes along with commander John Young.
Ronald Evans CAPCOM
Having served on the support crew of Apollo 7, and as a CAPCOM for Apollo 11, Ronald Evans would go on to be backup CMP for Apollo 14 before flying on Apollo 17, the last crewed mission to the moon in the Apollo program, and subsequently working on both the Apollo-Soyuz Test Project and the Shuttle flight program.
Owen K. Garriott CAPCOM
One of NASA's first scientist-astronauts, Owen Garriott would go on to fly on Skylab 3, setting a new world record for space flight duration; and on Spacelab-1 aboard Shuttle mission STS-9. He went on to play a substantial role in the development of the US Laboratory for the International Space Station.
Bruce McCandless II CAPCOM
A former fighter pilot and flight instructor in the US Navy, Bruce McCandless II went on to be backup pilot on the first crewed Skylab mission, and later served on two Shuttle mission crews, including STS-41-B where he made the first untethered free flight, using the Manned Maneuvering Unit which he helped develop.
James A. Lovell, Jr Backup commander
Having joined NASA at the same time as Neil Armstrong, Jim Lovell was already one of NASA's most experienced astronauts, having flown on Geminis 7 and 12, the latter with Buzz Aldrin. In the Apollo program, he was Command Module Pilot of Apollo 8 which performed the first lunar orbit, and would go on to be commander of the ill-fated Apollo 13.
Donald Kent (Deke) Slayton Director of Flight Crew Operations
A member of the first NASA group of astronauts, assembled in 1959 for the Mercury Program, Slayton didn't fly until the Apollo-Soyuz Test Project in 1975 (at which time he was the oldest person to fly in space). From 1963 until 1972 he served as Director of Flight Crew Operations, and after Apollo-Soyuz was Head of the Shuttle Approach & Landing Tests Program.