CSky: The NIGHT Facility

What do they do up on Nighthawk Mountain? People have seen lights, strange shapes, even unearthly screams have been heard. Cattle go missing, children come home with neat, painless scars, women fall pregnant with green, slimy offspring. 

Oh, it's only the National Institute for Gravitational Harmonics and Transmission. It's just a high-tech facility based around the study of gravity waves, nothing more. There are no tunnels in the mountain, or strange phenomena. Thy are not trying to open a gravitational portal to an alternate reality infested with horrific demons. What a silly idea. 

But seriously, stay away from NIGHT at night.