Tejon Ranch Radar Cross Section Facility

The Tejon Ranch Radar Cross Section Facility was a radar cross-section (RCS) testing site operated by Northrop Corporation—later Northrop Grumman—from the 1980s to 2011 in Antelope Valley, California, United States. Located at the southern edge of the Tehachapi Mountains, it was one of the few private outdoor ranges in the country designed to help develop stealth technology for military aircraft, including the B-2 Spirit stealth bomber.

Source: Wikipedia — Tejon Ranch Radar Cross Section Facility (CC BY-SA 4.0)