Located in El Paso County, near the city of Colorado Springs in the state of Colorado, at present part of the US Space Force and a part of NORAD, North American Aerospace Defense Command, the Cheyenne Mountain Complex was built from 1961 to 1966, it was designed to withstand nuclear weapons hits from the Soviet Union. In those days, the warheads were designed for 2-4 megatons because they were not very accurate and their accuracy was not very good, they would miss from 1 to 10 miles, so they had to be huge. Nowadays, since the missiles are much more accurate, the facility is not so impregnable. The facility is still in use by the US Space Force since it is still a secure site.