I've seen them at least twice on /r/whatisthisthing, a good couple dozen times on the road, and these days, even in press photos: GMC trucks with custom square boxes on the back, painted dark blue, with US Government "E" plates. These courier escorts, "unmarked" but about as subtle as a Crown Vic with a bull bar, are perhaps the most conspicuous part of an obscure office of a secretive agency. One that seems chronically underfunded but carries out a remarkable task: shipping nuclear weapons. ...
