KENNEDY SPACE CENTER, FLA. -- Loren J. Shriver (left), commander of Space Shuttle Mission STS-31, enjoys a laugh with fellow crew members Pilot Charles F. Bolden Jr. and Mission Specialist Bruce McCandless II after practice runs in the Shuttle Training Aircraft. STS-31 is set to lift off April 10 at 8 47 EDT.

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Photo credit: © NASA/piemags / Alamy / Afripics
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