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