"My name's Whitaker. I own this gun shop. I've barricaded myself on the roof, with provisions and guns enough to and kill every zombie in the city five times over, and eat well while I'm doing it. But in my haste I forgot to pack cola. I'm guessing you four'd be heading to the mall for rescue. I also
know the road is blocked. So here is my proposition: If you go find me some cola at yonder food store, I'll clear a path to the mall for you"

From Left 4 Dead 2: Dead Center