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Alan Bean crewed the Apollo 12 operated by NASA, with Alfred Worden as the backup pilot.
Crew member William Anders and backup pilot Buzz Aldrin served under commander Frank Borman on Apollo 8.
Apollo 12 | backup pilot | Alfred Worden Alan Bean | mission | Apollo 12 Apollo 12 | operator | NASA Apollo 8 | commander | Frank Borman William Anders | mission | Apollo 8 Apollo 8 | backup pilot | Buzz Aldrin