Ornith and I were stopped by local security in Texas City, TX when we were photographing a 14 1/2 mph sign, and later we received phone calls from the FBI, for the same photos. Oddly, they made me delete my photos but Ornith must have looked more innocent, because they never asked to see his camera. FYI, they were did not want us to take photos because of the oil refinery in the background.
QB