It seems very, VERY mysterious to me. I drove around there with a friend. You can't see ANYTHING at all; it's very similar, say, to a military installation. That just struck me as a little "off". Or worse.
It's interesting to think about: why would someone want to do that, you know?
Is it not possible that they walled and gated their 'community' specifically to keep curious people from driving up and down their streets and prying into things that aren't their business?
I'm not a fan of the "gated community" and the attendant crap they bring but at the same time, I figure it's their right to do so and none of my business to worry about it unless/until they do something wrong. If you feel it's so dangerous, then by all means pull a black op, go all ninja on them and bring out hard evidence something's rotten in Denmark, er Tanoan, otherwise it seems to me that it's best to simply live and let be.
I heard that the men in Tanoan all replace their wives with robots that are exactly like the wives they replace, but more eager to obey and serve their husbands. It inspired a novel and then a made-for-TV movie. That was before its original name, Stepford, was replaced by the new name Tanoan for P.R. reasons.