One hour before landing, Lovell,Swigert and Haise said thanks and goodbye to their lifeboat, the lunar module.

VOA: special.2009.07.22

The two other crew members were civilians John Swigert and Fred Haise.

VOA: special.2009.07.22

Lovell and fellow astronauts Fred Haise and Jack Swigert returned to Earth 40 years ago.

VOA: standard.2010.04.15

The LM was intended for two men (Lovell and Haise) to use in their landing on the lunar surface and then their return to the command module.

FORBES: Apollo 13: Lessons From the Successful Failure

Three astronauts, mission commander Jim Lovell, Fred Haise, and Jack Swigert, found themselves rocketing around the moon in a pair of joined vehicles, each with the interior space of a VW Beetle, almost no power, and no heat.

FORBES: Apollo 13: Lessons From the Successful Failure