At the end of the Cold War, numerous nearby radar sites for RBS and electronic warfare simulation included those at the Alzada (2 sites), Ekalaka, & Hulett Mini-Mutes Radar Sites, the Clark & Colony Radar Bomb Scoring Sites, and the "Ellsworth Air Force Base" sites (Belle Fourche, Colmer, & Horman Radar Bomb Scoring Sites and the Antelope Butte Mini Mute Radar Bomb Scoring Site).