Heres some interesting trivia for you. A B17 was used in the filming of the movie and was named (appropriatley) as "Doctor Strangelove"
In several shots of the B-52 flying over the polar ice en route to Russia, the shadow of the actual camera plane, a Boeing B-17 Flying Fortress, is visible on the snow below. The B-52 was a model composited into the arctic footage which was sped up to create a (quite unconvincing) sense of jet speed. The camera ship, a former USAAF B-17G-100-VE, serial 44-85643, registered F-BEEA, had been one of four Flying Forts purchased from salvage at Altus, Oklahoma in December 1947 by the French Institut Geographique National and converted for survey and photo-mapping duty. It was the last active B-17 of a total of fourteen once operated by the IGN, but it was destroyed in a take-off accident at RAF Binbrook in 1989 during filming of the movie "Memphis Belle." Home movie footage included in "Inside the Making of Dr. Strangelove" on the 2001 Special Edition DVD release of the film show clips of the Fortress with a cursive "Dr. Strangelove" painted over the rear entry hatch on the right side of the fuselage.