So, What About Aliens & Roof?

Everyone has heard at least once in his life crazy story and conspiracy theories about aliens abducting people. Stories about those dish-like flying disks that fly down to the roof of the house and kidnap innocent people. The aliens must be really skilled to come around so stealthy and not damage any shingle and tile or roof. But at the same time Santa Claus does down the roof without leaving any trace. Full ninja mode, no troubles and no roof to be repaired.