Underground of Center Tower, Alpha Shelter
Approximately two minutes have passed ever since Sarge, Wilder Barnes, and Ms. Croft got inside the 'frozen chambers' that led to the Alpha Shelter Banker. By now, they were shivering like newborn kittens on a windy day. If they stayed any longer, then they'd freeze to death.
Sarge knew their situation very well so he decided to knock on the metallic doors of the bunker one more time before heading back up. They couldn't waste any more time since the three leaders fighting for the Challenger 2 tanks were probably almost done. Their secondary goal was getting the tanks so if they were a minute too late to get to the surface, they'd have nothing to bring back to Rogue Shelter.
Bang bang bang...
