What are some good sniping spots for combat arms

For snow valley use the rises and falls in the ground for cover the high sand bags on the alpha base spwan are good there are some small spots beside the alpha bunker to snipe at the hill. In two towers there are a few small windows on the second floor which are good for sniping because no one looks there.In waverider the roofs at the back are good. there is a small chimney that you can get into on bravo side for spawn rushers.