Astronaut James A. Lovell Jr., commander of the Apollo 13 mission, is
pictured at his position in the Lunar Module (LM). The Apollo 13 crew of
Astronauts Lovell; John L. Swigert Jr., command module pilot; and Fred W.
Haise Jr., lunar module pilot, relied on the LM as a "lifeboat". The
dependence on the LM was caused by by an apparent explosion of oxygen tank
number two in the Service Module. The LM was jettisoned just prior to Earth
re-entry by the Command Module