After a bottlenecked lecture about planetary magnetic fields, units of measurement, and cardinal directions, Shane seemed fairly confident in his ability to trace the source of the signal. Twilight was all too happy to assist. He asked several questions about the atmosphere as well. Rainbow Dash was actually quite helpful. Her upbringing in Cloudsdale and her proximity to the weather factories coupled with her years managing various weather teams gave her an intimate knowledge of levels of all things ozone.