I messed around with that code. It's nice to have the building windows light up, but no matter what you set the distance to they seem to have a limited range. Also they don't emit any light to the environment so it's more of a cosmetic effect. The enterable building code works great for some buildings, but I can't get it to work with any of the military buildings. I have also spent countless hours trying to figure out a way to attach these light sources to the street lights as a temporary fix, but no luck.