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