Regia
Distributia
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Michael CaineBrad Crane
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Katharine RossHelena Anderson
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Olivia De HavillandMaureen Schuester
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Richard Chamberlaindr. Hubbard
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José FerrerDr. Andrews
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Trent DolanRadio Sergeant
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Alejandro ReyDr. Martinez
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Arthur SpaceEngineer
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Don 'Red' BarryPete Harris
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Richard WidmarkMajor General Thalius Slater
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Howard CulverAirman #2
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Henry FondaDr. Walter Krim
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Patty DukeRita
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Ben JohnsonFelix
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Fred MacMurrayMayor Clarence Tuttle
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Grant GeeAnne MacGregor
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Morgan PaullDr. Newman
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Chuck HaywardStandby Engineer
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Elizabeth RogersScientist (extended version only)
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Michael ScottDr. Bradford Crane
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Lee GrantAnne MacGregor
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Chris CapenLieutenant
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Cameron MitchellGeneral Thompson
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Bradford DillmanMajor Baker
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Slim PickensJud Hawkins
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Christian JuttnerPaul Durant