The Lunar Module was completed in time for Apollo 9, the first earth orbit test of ... Dave Scott, Al Worden and Jim Irwin were the crew of Apollo 15, the first mission to use the four-wheel ...

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.