cast
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Tom Tryon
Capt. Richmond Talbot
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Brian Keith
Maj. Gen. John M. Vanneman
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Edmond O'Brien
McClosky aka 'Mac'
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Dany Saval
Lyrae
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Bob Sweeney
Sen. Henry McGuire
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Tommy Kirk
Walter Talbot
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Kent Smith
Secretary of the Air Force
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Sarah Selby
Mrs. Talbot
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Nancy Kulp
Nutritionist Officer
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Bert Remsen
Brennan
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Harp McGuire
Federal Security Driver
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Simon Scott
Medical Officer
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Robert Brubaker
Space Flight Technician (uncredited)
- Walt Davis Air Force Officer (uncredited)
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Douglas Evans
Colonel (uncredited)
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Sally Field
Beatnik Girl in Lineup (uncredited)
- Michael Garrett Control Board Technician (uncredited)
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Bob Hastings
Motorist (uncredited)
- Jonathan Hole Hotel Clerk (uncredited)
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John Holland
Joe McCord (uncredited)
- William Hudson Space Flight Technician (uncredited)
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Kenner G. Kemp
Conventioneer in Hotel Lobby (uncredited)
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Nancy Kulp
Space Flight Nutritionist (uncredited)
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Muriel Landers
Fat Lady (uncredited)
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Harp McGuire
Federal Security Driver (uncredited)
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Karen Norris
Bridge Player (uncredited)
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Nelson Olmsted
Police Officer Dennis (uncredited)
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Jeffrey Sayre
Conventioneer in Hotel Lobby (uncredited)
- Bert Stevens Conventioneer in Hotel Lobby (uncredited)
- Chet Stratton Captain (uncredited)
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Arthur Tovey
Conventioneer in Hotel Lobby (uncredited)
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Guy Wilkerson
Conventioneer in Elevator (uncredited)
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Jo Anne Worley
Beatnik Girl in Lineup (uncredited)
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John Zaremba
Security Officer Conducting Lineup (uncredited)