[It starts with one alarm. Someone trying the larger doors at ground-level, seeking access. As some... mild deterrents kick in, there are some scratches and scorch-marks left on the side of the entrance, in an instinct to ward off whatever it is. There are no further attempts

from that angle. Sensors on the roof pick up movement. Not from the edges, but from above. Then weight and heat, a single large entity that roams the length of the roof. While pressure is applied to the skylight, it's ultimately left alone, as well as any rooftop entrances. It stops and settles in an open space, counting on near-black coloration to be unseen in the dark.]