Schriever Air Force Base, Colorado

Headquarters for both the Space Warfare Center and the Space Innovation and Development Center (SDIC), in addition to being a major control center for military satellites, through a complex of golf-ball-shaped radomes on base. The global positioning system (GPS) is also controlled from here, with the master clock on the base keeping the system in synch. The transfer of national intelligence assets and capabilities (spy satellites) to the military sector is coordinated through Schriever.