Start up the DLC map "streets" and right when you spawn turn around and there should be a ladder. Go up the ladder and go through the first door on your left. The you be on a porch and there should be a small set of stairs. With 2 bushes,1 on each side,Go down the stairs and go into the bushes on your left. Crounch in the bush and have fun killing terrorists ike flies. As long as you dont move out of the bush they cant see you.