It took several more hops by the drones, but there were no more coronary-inducing events. The drones found themselves in front of an access panel. According to our scans, this would lead to what some wit had called a Jeffries Tube. In theory, it should get us to the acceleration track used by the mechanism that connected the nonrotating outer shell to the rotating inner shell of the megastructure. But from that point on, there would be more "winging it" involved, as not all the engineering control systems could be resolved in detail.