Perhaps you've heard of Operation Gladio, the infamous post-World War II NATO program to train "stay-behind" agents to fight guerilla-style against a future hypothetical Soviet invasion of Western Europe. Believe it or not, the United States Air Force, briefly in partnership with the FBI, devised exactly such a program it carried out in Alaska between 1951 and 1958. This went beyond the planning stage - it was actually implemented. At least 89 civilians in Alaska were paid, trained, armed, and prepared to do...something...if the USSR charged across the Bering Strait and occupied what at the time was a US Territory.

Here is the exhaustive five-part FBI tell-all on the now-declassified project. 

These podcasts are ad-free and self-produced; I value your support on Patreon at https://www.patreon.com/ginandtacos.