"Agents from the FCC used direction finding techniques to find that strong wideband emissions were coming out of a blue Toyota Highlander SUV driven by Humphreys."

This I find interesting and am curious what devices they had to obtain in order to accomplish this.

I used to work for a telco that, to this day, continues to have this very issue with _someone_ in a remote rural location. By the time the NOC can inform local law enforcement the jammer has left the area, seemingly impossible to track.