Dennis Weaver

Lt. Joe Hardy

Lois Nettleton

Anne Wilson

Anne Francis

Marie Hardy Forrest

Andrew Duggan

William Forrest

Percy Rodriguez

Capt. Jackson

Pamelyn Ferdin

Sharon Hardy

James Hong

Maj. Thon

Frank Maxwell

Col. Thompson

Carl Reindel

Lt. Diamonte

John S. Ragin

Maj. Parkman

Vernon Weddle

Surgeon

Bob Harks

Interne (uncredited)