Sniping pointin the Spartan base. There is alot of cover in the middle left hand side, but an open area for vehichles. The shield doors are used so you cant shoot into th eback section of the Covenant base. The other shield doors are in a small area. There is several sections to this map, all unique. Download and play a CTF game and you will see. Sorry to dissapoint you, but its after a song. Shield doors were not abused, try it out, and you will be pleasant ly surprised. Thanks.