The drone briefly ceased fire as Glover drifted over it and touched down on the thick carpet. The drone revved its motor and began to circle him, firing bursts at different portions of his anatomy in a random timing sequence. Glover watched contemptuously as the drone sought a weakness in his defense. On the third circle, Glover lashed out with his foot, deflecting the drone’s course. Before its onboard expert system could compensate, the little machine hit a piece of debris from the doors and bounced into the air. It came down on its right front fender and toppled forward. Its momentum was so great that it rolled right through the open doorway of the elevator shaft.