The rifle was at his shoulder. He advanced to a position where he could brace himself against the frame of the window, and he drew a bead on the tall black jihadist. From this distance the shot was feasible, assuming that the former owner of this rifle had taken decent care of it, but he would have to watch his breathing and he would have to wait for the target to stand still. Until then all he could do was track him and think about the fundamentals of the shot: how he was bracing himself and what obstructions might get in the way.