Today, I’m taking you on a journey to the Grey Butte facility in California’s Antelope Valley, where I spot the elusive YFQ-42A CCA drone prototype. Formerly a radar cross section test site similar to Lockheed’s Helendale and Northrop’s Tejon Ranch, Gray Butte has a long history of involvement in classified programs and has long been associated with unusual aircraft sightings. Join me as we spy inside the hangars into the secret world of advanced, next generation autonomous aircraft and take a look at the history of this often overlooked test site.