So a new map dropped again last week for Modern Warfare 3. The new DLC comes with one multiplayer map and 2 Spec ops maps.
The multiplayer one, Black Box, is actually pretty good. There’s a lot of room to run around and setup tactical plans and strategies as well as mount defensive points. Here’s an overview of the layout. The best strategy is to use the plane and multiple rooms and corners along with the assassin perk to get around the map and clear out the enemies.