Red Nightmare was a short film created for the Department of Defense by Warner Brothers. Narrated by Jack Webb and starring some Warner actors, the film is a pretty straightforward Twilight Zone ripoff where a man wakes up to find himself in a United States controlled by the Soviet Union and run on Communist principles.
You have to love the irony of the US military funding anti-Communist propaganda films. Apparently the free market wasn’t filling that niche well enough.