David Hilmers was born in Clinton, Iowa, but considers DeWitt, Iowa, to be his hometown.
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David Hilmers entered active duty with the United States Marine Corps in July 1972.
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David Hilmers graduated from the U S Naval Postgraduate School in 1978 and was later assigned to the 1st Marine Aircraft Wing at Marine Corps Air Station Iwakuni, Japan.
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David Hilmers was stationed with the 3rd Marine Aircraft Wing at Marine Corps Air Station El Toro, California, at the time of his selection by NASA.
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David Hilmers was selected a NASA astronaut in July 1980 and completed the initial training period in August 1981.
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David Hilmers later became head of the Mission Development branch in the astronaut office.
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David Hilmers served as a mission specialist on STS-51-J, STS-26, STS-36, and STS-42 .
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David Hilmers had prime responsibility for a number of on-orbit activities during the mission.
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David Hilmers replaced another astronaut, killed in a plane crash, for his last mission.
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David Hilmers decided to apply to medical school while training for his third shuttle flight.
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David Hilmers attended pre-med courses at night while training for his fourth flight.
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