Point out hazards, such as obstructed vision at a corner that has a large bush, an intersection where cars routinely don't stop at the stop sign, or a subway stop that has confusing signs when you exit.
2.
:This was the killing of two United States Army officers by North Korean soldiers in the Joint Security Area, near the Bridge of No Return, over the attempt to trim a poplar that obstructed vision between checkpoints, and heightened tensions on the border-this was followed by Operation Paul Bunyan, which ended in the felling of the tree by Task Force Vierra.