In the hut inside the cemetery are some boxes. Jump on the low box next to the window, then jump towards the window facing the wall. As you are about to hit the window, crouch. If done correctly, you will go out the window. You can shoot from that side of the hut. There is also a tractor there that you can jump on the front of then jump on to the roof of the hut. This is a very good sniping location, but you can be shot if spotted.