To refute early 1960s novels and Hollywood films like "Fail-Safe" and "Dr. Strangelove", which raised questions about US control over nuclear weapons, the Air Force produced a documentary film, "SAC Command Post", to demonstrate its responsiveness to presidential command and its tight control over nuclear weapons. However, later academic research into declassified documents showed that U.S. military commanders had been given presidentially-authorized pre-delegation for the use of nuclear weapons during the early Cold War, showing that that aspect of the film's plot was plausible.