Knoxville, Tennessee. In the parking lot at Downtown West.

UPDATE: Reader James Dempsey writes: “The bumper sticker in your post is from LaRue Tactical (http://www.laruetactical.com/), a great company doing great things for American and Allied servicemembers. As the anniversary of Sept. 11th approaches, it is worth going to La Rue’s webpage and reading the biography of MSG Horrigan.”

It was parked in front of Salon Visage.