John Oliver Creighton /

John Oliver Creighton (born April 28, 1943 in Orange, Texas) is a former NASA Astronaut who flew three space shuttle missions. Selected as an astronaut candidate by NASA in January 1978, Creighton became an astronaut in August 1979. During the following four years he held a variety of technical assignments in support of the Space Shuttle Program. Following his first flight, Creighton became the astronaut representative to the Shuttle Program Manager. During the ensuing two years, Creighton participated in all the key decisions following the Challenger disaster helping to shape the plan for resuming safe manned space flight. Starting with STS-26, Creighton served as Lead "CAPCOM" for the first four Space Shuttle flights. In March 1989 he was assigned to command STS-36 but continued to serve as Head of the Mission Support Branch in the Astronaut Office until commencing full time training for his upcoming flight. Following his second flight, Creighton headed up the Operations Development Branch within the Astronaut Office for one year prior to resuming full-time training for his next command. Creighton served as pilot on STS-51G (June 17–24, 1985), was spacecraft commander on STS-36