The Capistrano Test Site is an isolated former R&D complex on 2,700 acres in the hills at the edge of Camp Pendleton, established in 1963 by TRW's Defense Space Systems Group. Initially conceived to develop and test various rocket propulsion systems (including the Apollo Lunar Module Descent Engine), its purview expanded dramatically over the decades to include space-based "Star Wars" high-energy laser weapons systems in the 1980s, as well as advanced radar and satellite communication systems. After TRW's sale to Northrop Grumman in 2002, Northrop Grumman continued to operate the site until its closure in 2011. The buildings have been removed in recent years, though roads, pads, and water treatment facilities remain at the site. Anduril, a new defense company in Costa Mesa, has used the site for drone tests in the last few years.