Dr. Cantwell

Schnall

Sergeant Tierney

Sergeant Baxter

Warden

Unknown

Garrigues

Federal Marshal

Mr. Tilden

Swede

Tim Naylor

Minor Role (uncredited)

Assistant Scientist

Press Man

Mr. White

Frank Slater

Howard Pender

Pender

Capt. Boggs

Colonel Nesvig

FBI Agent Mr. Nelson

John Deegan

Sheriff

Unknown

Lt. Denphy

McAllister

Mr. Warren

Captain

Dan Perry

George (uncredited)

Lieutenant, Radar Officer

Sandy Allen (uncredited)

Harry Sherbourne

Carson

Crewman Nichols

Officer on Phone

Officer 3822

The Highway Patrolman

Sergeant Corey

Macy

Scott Frasier

Clay Adams

Al Jennings

Andy

Audience Member (uncredited)

Cheyenne