Dr. Matt Hastings

John Agar

Stephanie "Steve" Clayton

Mara Corday

Prof. Gerald Deemer

Leo G. Carroll

John Burch

Ross Elliott

Sheriff Jack Andrews

Nestor Paiva

Josh

Hank Patterson

Lt. John Nolan

Edwin Rand

Paul Lund / Eric Jacobs / Airport Workman

Eddie Parker

Townsend

Raymond Bailey

Barney Russell

Bert Holland

Andy Andersen

Steve Darrell

Jet Squadron Leader

Clint Eastwood

Coed Secretary

Jane Howard

Murphy

Billy Wayne

Telephone Operator

Dee Carroll

Miner

Tom London

Trooper Grayson

James Hyland

Miner

Edgar Dearing

Jim Bagney

Donald Dillaway

Ridley

Vernon Rich

Trooper

Bob Nelson

Trooper

Ray Quinn

Deputy

Bing Russell

Warehouseman

Robert Stephenson

Bus Driver

Bud Wolfe

Helper

Jack Stoney

Driver

Rusty Wescoatt

Arizona State Trooper

George DeNormand

Ranch Hand

Jack Hendricks

Glenn Ford

Major

Stuart Wade