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)
