Playable on a site. If a company that has moved to this site this turn does not tap a ranger, it must do nothing during its site phase.
"In the far stage, under the distant lamps, they could just make out a figure...as they looked it seemed to move and sway this way and that, as if searching the ground. It then crawled, or went crouching, back into the gloom beyond the lamps."
-LotRI