Doing a google search on the Tonopah Test Range (TTR), this showed up in the search results:
Not only can I get to visit the range up close and personal, but I can save on the tickets as well. [Note that XSD shows up once in a while as the FAA airport code for the Tonopah Test Range.] Let's check out the link:
Since most flights to TNX originate from Las Vegas, I entered "las". Note that I could have also booked flights to Indian Springs (INS), Desert Rock (DRA) on the Nevada Test Site, and Nellis Air Force Base (LSV). I guess they drew the line at letting me land at Groom Lake. Well, lets see if the search engine found a flight....
The warning message in red says it all. "TNX" could not be found. Drat!