Jeff Morrow

Mitchell 'Mitch' MacAfee

Mara Corday

Sally Caldwell

Morris Ankrum

Lt. Gen. Edward Considine

Louis Merrill

Pierre Broussard

Edgar Barrier

Dr. Karol Noymann

Robert Shayne

Gen. Van Buskirk

Clark Howat

Maj. Bergen

Morgan Jones

Lieutenant, Radar Officer

George Cisar

Admonishing Man on Airliner (uncredited)

Leonard P. Geer

Paramedic (uncredited)

Dabbs Greer

Fighter Pilot, (archive footage) (uncredited)

Sol Murgi

Civil Aeronautics Board Member (uncredited)

Fred F. Sears

Narrator (voice) (uncredited)

Robert B. Williams

First State Trooper (uncredited)