Alien Raiders

For all you Delta Green aficionados, here is a scenario for you: it's the end of the night shift at Hastings Supermarket, a typical family-style grocery store in Buck Lake, Arizona. Unfortunately the normal monotony of rounding up shopping carts and settling out the cash drawers is broken when a group of masked and armed-to-the-teeth militants invades the store, immediately killing several of the employees and shoppers seemingly at random while holding the rest hostage after their spotter is killed.

Though the hostage-takers at first appear to be robbers, they reveal themselves to be a cadre of rogue scientists that has discovered and tracked down the source of an alien infestation to this very store. A modern fusion of "The Thing" and the tradecraft of the Delta Green universe.