At least one of these Command, Control, and Communications (C3) facilities is always connected to the Air Defence & Direction Center (ADDC or air ops centre) at Dübendorf Air Base and fully operational on-line on a 24/7 basis, monitoring Swiss airspace. Depending on the international situation, more facilities will be manned; in case of crisis or war (ADDC and 4 facilities operational) radarcoverage will be extended far beyond the Swiss boundaries. Each of these facilities is capable of making all battle management decisions in case of elimination of the ADDC or other facilities.