Deep Underground Support Center
{{Use American English|date=May 2019}}
{{Use dmy dates|date=May 2019}}
{{Distinguish|National Deep Underground Command Post{{!}}the Deep Underground Command Center (DUCC) proposed near Washington and "closely patterned" on the SAC DUSC proposal}}
The Deep Underground Support Center (DUSC) was a Strategic Air Command nuclear bunker proposal in 1962 for "a hardened command post...to withstand a 100-megaton weapon with a 0.5 n.m. CEP".Wainstein cites: Historical and Research Division, Strategic Air Command, History of the Strategic...1962 Favored for a mine near Cripple Creek, Colorado (west of the Cheyenne Mountain nuclear bunker started in 1961), the DUSC was to be {{Convert|3500|ft|abbr=on}} deep and be "able to accommodate some 200 people for [30 days] to handle the large volume of data processing and analysis required for strike assessment, as well as follow-on strike and other decisions."{{r|Wainstein}}{{rp|325}} Cost estimates for the SAC Control System facility increased to $200 million, and when the operational year slipped from 1965 to 1969, SAC decided in 1963 "for a long-endurance, all airborne concept instead" (Wainstein), and the JCS and OSD concurred with the DUSC project cancellation.Wainstein cites: {{Citation |type=declassified "Memorandum for DDR&E" |author=Deputy Secretary of Defense |date=5 February 1962 |title=Deep Underground National Command Center |publisher=Office of the Secretary of Defense }} and a Joint Chiefs of Staff{{Verify source|date=May 2012}} "Draft Memorandum for the President": National Deep Underground Command Post, 7 November 1963, TOP SECRET.