The massive planetary shipyards used by the UNSC to load and unload ships.

The Zombie outbreak has spread along most of the West coast. The last remaining evac center has one helicopter left. You try to board, but as soon as you get to the heli pad, it flies away. You have been Left 2 Die. Eventually you make your way to a small town. You have three choices, board up buildings and hold out, fight, or die. Supplies are in the Walmart. Don't even think about robbing the gun store, all the guns you need you already have. The Zombies have mutated, some can fly, move quicker than others, and even teleport! Watch your back, Semper Vigilans!