Once off the ramp, each drone turned in a different direction. Most were headed for the entrances to the residence level; their job was to limit reinforcements for Hyde-White. Some stolidly climbed up and across obstructions, proceeding in direct lines to their stations. Others whizzed around debris, taking corners as if they were driven by tiny, demented road rally drivers. Sam thought he knew which ones Willie was running. Within thirty seconds, only three remained in sight, and they had taken up station in a triangle with Sam at the center. Their turrets swiveled to allow gun and camera sight to cover a circular field of fire.