During the eight-day mission beginning on May 18, 1969, Tom Stafford ... Dave Scott, Al Worden and Jim Irwin were the crew of Apollo 15, the first mission to use the four-wheel-drive lunar ...

Originally Lovell had been assigned to the Apollo 8 backup crew. But when Mike Collins had to drop out for surgery on his spine, Lovell was reunited with his Gemini commander, Borman, for Apollo 8.