From last bread
COC: combat operations center?
Chapter 12. BALLISTIC MISSILE DEFENSE CENTER
The Ballistic Missile Defense Center (BMDC) is the highest echelon of command and control in the SAFEGUARD System. The Commander-in-Chief of the Continental Air Defense Command (CINCONAD) exercises operational command through the BMDC. The BMDC, in turn, directs the activities of the Perimeter Acquisition Radar and the Missile Direction Center, and controls the launch and burst of nuclear missiles. BMDC facilities are collocated with the CINCONAD Combat Operations Center (COC) in the Cheyenne Mountain Complex of the North American Air Defense Command (NORAD).