Raven Rock 's joint War Room , USAF ADCC , and other facilities were designated the Alternate National Military Command Center ( ANMCC ) on 1 October 1962 when the Burroughs SS-416L Control and Warning Support System with the Semi Automatic Ground Environment had been deployed ( Back-Up Interceptor Control began at North Bend AFS in December . ) The term AJCC remained in use , only for the Army-managed communications complex . On 17 October 1962 , DOD Directive S-5100.30 conceived the Worldwide Military Command and Control System with five groups of C2 systems : the National Military Command System was the primary group ( to serve the President/SECDEF/JCS ) and was to contain the Pentagon NMCC , Raven Rock 's ANMCC , 3 NEACP aircraft on 24-hour ground alert , 2 NECPA ships , and interconnecting communications — the Raven Rock bunker was hardened further to about 140 psi blast resistance by 1963 when the Cheyenne Mountain nuclear bunker was being completed for tbd psi . The USAF 's subsequent IBM 473L Command and Control System with AN/FYA -2 Integrated Data Transfer Consoles and Large Panel Display Subsystem had equipment deployed at both the NMCC and ANMCC ( a 2nd IBM 1410 computer was installed by 15 December 1966 . ) The USACC Site R Telecommunications Center was designated in 1976 , and the 1977 Alternate National Military Command and Control Center Improvement Program was worked on by the DoD Special Projects Office ( later renamed Protective Design Center ) for a new deep underground C2 center with > of air entrainment tunnels ( cancelled in 1979 . ) After the 2001 September 11 attacks , Vice President Cheney used Raven Rock as a protected site away from President George W. Bush . The Raven Rock Mountain Complex was declared part of the Pentagon Reservation under and on May 25 , 2007 , DoD policy declared it is unlawful for any person entering in or on the property ... " to make any photograph , sketch , picture , drawing , map or graphical representation of the Raven Rock Mountain Complex without first obtaining the necessary permission . " In 1977 , the bunker had an Emergency Conference Room , and the Current Action Center was a military intelligence unit ( an Air Force general was responsible for overseeing the installations ' communications . )
September 11 attacks
September 11 attacks
Raven Rock Mountain Complex