Roadblocks are not common in the USA except for the ones they occasionally set up to catch drunk drivers. And in 30+ years of driving I've only seen one of those. As far as wearing camo goes it probably depends on the location; around here camo is so common as to not even rate a second look, particularly from August though January.

Apologies for Bush messing up your golf game. I imagine they landed there for some specific reason--most likely security.