Five or so years ago (maybe longer), there was a photo of a sign in southern Arizona going around. It was a sign, several of many, posted by the Bureau of Land Management. It was a warning sign, advising people to stay away because of cartel activity. If I remember correctly, this was about 50 or sixty miles INTO Arizona. I contacted BLM by email and believe it or not, I did receive a reply telling me that, yes, they were legitimate signs posted by the feds.
Bump.