Launched on April 11, 1970, Apollo 13 was the third mission intended for the Moon. But the mission was aborted after an oxygen tank ruptured, severely damaging the spacecraft's electrical system. Intense collaboration between the crew and ground control safely returned these men to Earth.
In this April 17 photo, astronaut John L. Swigert Jr., the command module pilot, is lifted aboard a helicopter in a helicopter rescue net while Commander James A. Lovell Jr. awaits his turn. Astronaut Fred W. Haise Jr. is already aboard the helicopter.