Bert Stevens
Air Intelligence Command Officer
Forbes Murray
Military Officer at Experiment
Arthur Tovey
Officer/Civilian at Military Conference
Nicky Blair
Military Officer at Experiment (uncredited)
Jimmy Cross
Military Messenger (uncredited)
Jack Deery
Military Officer (uncredited)
Raoul Freeman
Military Official (uncredited)
Paul Frees
Alien (voice) (uncredited)
James Gonzalez
Military Official (uncredited)
Ed Haskett
Military Official (uncredited)
Harry Lauter
Cutting - Generator Technician (uncredited)
William Meader
Worker in Control Tower (uncredited)
Sol Murgi
Plane Passenger (uncredited)
Forbes Murray
Military Officer at Experiment (uncredited)
William J. O'Brien
Radio Listener (archive footage) (uncredited)
Murray Pollack
Plane Passenger (uncredited)
Mike Ragan
Tank Commander (uncredited)
Alan Reynolds
Maj. Kimberly (uncredited)
Dale Van Sickel
Man Crushed Beneath Wall (uncredited)
Guy Way
Civilian Observing Saucer Attack (uncredited)
Bob Whitney
Plane Passenger (uncredited)
Frank Wilcox
Alfred Cassidy (uncredited)
Beal Wong
Chinese Radio Listener (uncredited)
William Woodson
Narrator (voice) (uncredited)
