There are no Web ads, gorilla-suit wearers standing on the corner flipping arrow signs or even a simple "Open for Business" sign; there is just a makeshift, plywood plaque that describes exactly what it is -- "Tan Box Bike Repair."
For service members at Kandahar Airfield, Afghanistan, with bicycle issues, Tan Box Bike Repair is probably the only, and definitely most-affordable, way to get necessary repairs for bikes that face some extreme riding conditions. The parts and repairs are absolutely free.