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