Go to the house on the southwest side of the map. Lay down on the porch and you will notice a cylinder. Get close enough to it and you will see a shaded triangle. Try crawling between the triangle and the cylinder, and you will notice that the walls have disappeared. Stand up or kneel, and you can shoot people. Note: If someone comes in the house they will be able to see you.
Jameson Fehlhaber.
If you have binoculars, go in front of the metal box in between the office and the other building. Make sure there are two boxes behind you. Lay down flat and take out your binoculars. Start crawling forward to get in the box.
Jameson Fehlhaber.