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Mr. Swigert was one of the 19 astronauts selected by NASA in April 1966. He served as a member of the astronaut support crew for the Apollo 7 mission.

Mr. Swigert was next assigned to the Apollo 13 backup crew and subsequently called upon to replace prime crewman Thomas K. Mattingly as command module pilot. (The substitution was announced 72 hours prior to launch of the mission following Mattingly's exposure to the German measles.) Apollo 13, April 11-17, 1970, was programmed for ten days and was committed to our first landing in the hilly, upland Fra Mauro region of the moon. However, the original flight plan was modified enroute to the moon due to a failure of the Apollo 13 service module cryogenic oxygen system, which occurred at approximately 55 hours into the flight. Swigert and fellow crewmen, James A. Lovell, spacecraft commander and Fred W. Haise, lunar module pilot, working closely with Houston ground controllers, converted their lunar module "Aquarius" into a effective lifeboat. Their emergency activation and operation of lunar module systems conserved both electrical power and water in sufficient quantity to assure their safety and survival while in space and for the return to earth.

In completing his first space flight, Mr. Swigert logged a total of 142 hours, 54 minutes.