Dr. Ed Wainwright
Peter Graves
Audrey Aimes
Peggie Castle
William's Date
Eilene Janssen
Frank, grainary platoon soldier
Hyllton Socher
Gen. Short
Frank Wilcox
Editor Norman Taggart
Douglas Evans
William Summerfield, teen boy
Paul Grant
Lieutenant
Richard Emory
Dave
Hank Patterson
Observation Post #3 Soldier
Steve Warren
Observation Post #1 Soldier
Frank Connor
Observation Post #2 Soldier
Don Eitner
Gen. John Hanson
Morris Ankrum
Chuck, granary platoon soldier
Rayford Barnes
Bomber Pilot
Kirk Alyn
TV Announcer (uncredited)
Bill Baldwin
Helicopter Pilot (uncredited)
Frank Chase
Soldier (uncredited)
Joe Cranston
Red Cross Representative
Patricia Dean
Army Sentry (uncredited)
James Douglas
Helicopter Pilot (voice)
Paul Frees
Police Lt. MacKenzie (uncredited)
Lyle Latell
Police Dispatcher KLP646
Dennis Moore
Frank Johnson
Than Wyenn
Roadblock Sentry Confiscating Camera
Zon Murray
Agricultural Agent
Alan Reynolds
Man with Red Cross Representative [extra]
Ralph Sanford
Col. Hill [bit]
Bert Stevens
Headquarters Sergeant
Alan Wells
Col. Tom Sturgeon
Thomas Browne Henry
Cpl. Mathias
Richard Benedict
Capt. James Barton
James Seay
Maj. Everett
John Close
State Police Car 254 Officer
Don C. Harvey
Roadblock Sergeant
Larry J. Blake
Director
Bert I. Gordon
Producer
Special Effects
Special Effects Assistant
Flora M. Gordon
Screenplay
Fred Freiberger
Lester Gorn
Editor
Aaron Stell
Art Direction
Walter E. Keller
Director of Photography
Jack A. Marta
Original Music Composer
Albert Glasser
Makeup Artist
Steve Drumm
Electrician
Austin Herrick
Second Assistant Director
Wilson Shyer
Music Director
Sound Mixer
Richard E. Tyler
Music Editor
Morris J. McNaughton
Set Decoration
George Milo
Assistant Director
Melville Shyer
Sound Effects
Douglas Stewart
George J. Eppich
Key Grip
Nels Mathias
Property Master
James Harris