The start of the game has you at Hangar 18 in Groom Lake. There will be a Pack-A-Punch machine and either a Jugger-Nog or Speed Cola machine. The machines switch back and forth. This is a pre-round type thing. Zombies will come from the sides and up through the mud. They will die from one knife hit or a few rounds of your M1911. If you have the skill and know how, you can chain the zombies together and get enough points for Jugger-Nog. Hell Hounds can also be found in this area, but only this area. The Perk-A-Colas are right next to a teleporter pad. You need to get to the teleporter pad to make it to the moon base and start the rounds of zombies.