The whole massive robotic platform went into motion, pirouetting around the central axis of the main shaft. Saskia couldn’t help thinking of the big cylinder in a cowboy’s revolver. It had a single large orifice in its top, offset to one side, matching the diameter of the gun barrels. When this was positioned below the breech of the barrel that had just been loaded, the whole thing rose upward in a swift, smooth movement until the connection was made.