Himself - Capt. Nikolai Shumkov

Himself - Capt. Ryurik Ketov

Himself - Theodore Sorensen, Special Counsel to the President

Himself - Dino A. Brugioni, CIA Analyst

Himself - Robert McNamara, Secretary of Defense 1961-1968

Himself - Rudolph Rump, Radar Man, USS Blandy

Himself - Capt. Charles Rozier, USS Cecil

Himself - Capt. Alexi Dubivko

Chief Petty Officer

Ketov (uncredited)