The “American Redoubt” in the inland northwestern US is a concept that perfectly illustrates the right-wing undercurrent underlying much of the modern survivalist movement. Broadly defined, the Redoubt consists of the states of Idaho, Wyoming, Montana (particularly the western half of the state), and the areas of Washington state and Oregon east of the Cascade Mountains (away from those filthy tree-huggers, hipsters, and commies in Seattle and Portland).
The idea of the Redoubt was developed by James Wesley Rawles, owner of the popular one-stop survivalist website SurvivalBlog, as a haven for survivalists and conservatives to relocate to on the basis of its being perceived as the exemplar of “true American” values, a place where small towns, farmers, the working class, and churches dominate political and cultural life. Furthermore, the region’s mountainous terrain makes it prime territory for guerrilla warfare against an invading army — he explicitly disqualified North and South Dakota and eastern Montana from being part of the Redoubt, despite their similar values, on the basis of their open plains being “tanker country”.
It was likely for this reason that the people behind The Citadel chose northern Idaho as the site of their planned community for “true Americans”. The Flathead Valley in western Montana has also become a magnet for the “Patriot” community, with fundamentalist pastor and 2008 Constitution Party Presidential candidate Chuck Baldwin notably moving there from Florida in 2010 and calling on his fellow “Patriots” to follow him west.
Coincidentally, the northwestern US was also chosen by white nationalists in the '80s as a place to relocate to in order to turn it into a white/Aryan “homeland” on the grounds of the area being overwhelmingly white. Rawles and other Redoubt supporters insist that they’re not racist, though; in fact, Rawles explicitly speaks of Orthodox Jews (and, of course, Messianic Jews) as being in line with his moralistic Christian ideals, and calls on them to move to the Redoubt as well.