Just as civil aviation has become thoroughly addicted to GPS, the military is trying to wean itself off that dependence and that’s causing some fractious conflicts in the Southwest. The military uses the wide-open spaces to purposely jam GPS signals to see how its equipment and personnel cope with the “GPS denial.” But according to IEEE Spectrum, the military and the FAA are not always on the same frequency when it comes to managing those tests and controllers and pilots have put their frustrations in writing in NASA’s Aviation Safety Reporting System. "Aircraft are greatly affected by the GPS jamming and it's not taken seriously by management," says one report gleaned by IEEE Spectrum. "We've been told we can't ask to stop jamming, and to just put everyone on headings.”
This is a companion discussion topic for the original entry at https://www.avweb.com/aviation-news/gps-jamming-tests-frustrate-pilots-controllers