A great paper about the historical ties between the US government and Hollywood.
The US Military has a long history of working with the Entertainment industry in what is known as the Military-Entertainment Complex. The relationship began in the late 1930s, during the war effort of WW2, but has since evolved to be a key tool of propaganda and cultural hegemony for the US Empire with influence extending to every area of entertainment.
Today the military-entertainment complex is evolving. The US Military is intimately involved in the development of video games like Call of Duty and eSports, often using them as recruitment and training tools. In the next generation of warfare that's forming - with remote controlled drones and robot dogs - gamers have become a critical new audience to appeal to.