Reparto y equipo

Jack Arnold

John Agar Dr. Matt Hastings

Mara Corday Stephanie 'Steve' Clayton

Leo G. Carroll Prof. Gerald Deemer

Nestor Paiva Sheriff Jack Andrews

Ross Elliott Joe Burch

Hank Patterson Josh

Eddie Parker Paul Lund / Eric Jacobs / Airport Workman

Bert Holland Barney Russell

Raymond Bailey Dr. Townsend

Steve Darrell Andy Andersen

Edwin Rand Lt. John Nolan

Wag Blesing Townsman

Clint Eastwood Jet Squadron Leader (uncredited)

Dee Carroll Telephone Operator (uncredited)

William Alland

Herman Stein

George Robinson

William Morgan