Whatever it is, it seems to be spreading, since the arm that first touched the roof is glitching out too--like someone is stretching and compressing a part of a videogame model. It isn't painful, per se, but it's nauseating to look at.

"WARNING. WARNING. IMPROPER GEOMETRIES DETECTED OUTSIDE OF DESIGNATED RETRIEVAL ZONE. INITIATING BORDER BREAK PROTOCOLS TO CORRECT," blares a tinny voice coming from the roof.