two officers were just below street level in a manhole appearing to work on city utility infrastructure.-two more ascended to the roof by way of some scaffolding that purported to belong to window washers.-three others seemed to be operating a street cleaning machine and two more were suspended from a bucket truck with three others out of sight inside the truck.-a garbage truck came down the street appearing to be picking up trash.-none of these activities seemed to be the least bit out of place.-it would look to the casual observer as though everything was business as usual .