The relationship between US national security and Hollywood is much deeper and more political than anyone has ever acknowledged. It is a matter of public record that the Pentagon has had an entertainment liaison office since 1948. The Central Intelligence Agency (CIA) established a similar position in 1996. Although it was known that they sometimes request script changes in exchange for advice, permission to use locations, and equipment such as aircraft carriers, each appeared to have passive, and largely apolitical roles. Files we obtained, mainly through the US Freedom of Information Act, show that between 1911 and 2017, more than 800 feature films received support from the US Government's Department of Defence (DoD), a significantly higher figure than previous estimates indicate. These included blockbuster franchises such as Transformers, Iron Man, and The Terminator. On television, we found over 1,100 titles received Pentagon backing - 900 of them since 2005, from Flight 93 to Ice Road Truckers to Army Wives. When we include individual episodes for long running shows like 24, Homeland, and NCIS, as well as the influence of other major organisations like the FBI and White House, we can establish unequivocally for the first time that the national security state has supported thousands of hours of entertainment. For its part, the CIA has assisted in 60 film and television shows since its formation in 1947. This is a much lower figure than the DoD's but its role has nonetheless been significant.