Glenn Langan

Self (archive footage)

Dr. Jeff Turner

Johnny

Eddie Carstairs

Lloyd Morgan

Lt. Col. Glenn Manning

Doctor Terry

Capt. Petersen

Sam Casey

Officer Pete Grayson

Capt. Rex Morgan

Edmund Dantes

Prof. Ralph Fontayne

Capt. Rufe Blackwell / Sam Gilmore

Lt. Crofts Livingstone, USN

Lieutenant Ashley Crothers

Roger McRae

Jack Holbrook

Bill Van Dyke III

Judson

Pietro Leoni

Colonel Nathan Dudley

Interne

Warden's Secretary (uncredited)

Student

Capt. Stewart (uncredited)

Cabinet Secretary (uncredited)

Gen. Knowland

Capt. Jonathan West

Capt. Ross

Self

North Carolina Congressman

Gun Crewman (uncredited)

Reporter (uncredited)

Prosecutor