At 10:55PM, Melanie’s swing shift was almost completed, and as she was returning her tools to her opened toolbox, she noticed that Eve had glided up to her on her dual tractor treads and come to a complete stop directly in front of her.   Eve’s mechanical arms and extenders retracted, and she seemed to pause, waiting for Melanie to give her a command.  As Eve idled before Melanie, Eve  seemed to…