Editing NORAD (section)

===Post–Cold War===
In 1989, NORAD operations expanded to cover counter-drug operations, for example, tracking of small aircraft entering and operating within the United States and Canada.<ref>{{Cite web|url=https://nuke.fas.org/guide/usa/c3i/cmc.htm|title=Cheyenne Mountain Complex - United States Nuclear Forces|website=nuke.fas.org}}</ref> DEW line sites were replaced between 1986 and 1995 by the North Warning System. The Cheyenne Mountain site was upgraded, but none of the proposed [[OTH-B]] radars are currently in operation.

After the [[September 11 attacks]], the NORAD Air Warning Center's mission included the interior airspace of North America.<ref name="Cheyenne Mountain Division - Air Warning Center (AWC) by NORAD Public Affairs">{{cite web|url=http://www.norad.mil/about/CMOC_2.html |title=Cheyenne Mountain Complex |at=AWC [Air Warning Center]|publisher=NORAD Public Affairs |access-date=9 September 2012|archive-url=https://web.archive.org/web/20121005065851/http://www.norad.mil/about/cmoc_2.html|archive-date=2012-10-05}}</ref>

The Cheyenne Mountain Realignment<ref name=GAO>{{cite report |last=D'Agostino |first=Davi M |date=21 May 2007 |title=Defense Infrastructure: Full Costs and Security Implications of Cheyenne Mountain Realignment Have Not Been Determined [GAO—07-803R] |url=http://www.gao.gov/assets/100/94893.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://www.gao.gov/assets/100/94893.pdf |archive-date=2022-10-09 |url-status=live |publisher=[[Government Accountability Office|United States General Accounting Office]] |access-date=9 September 2012}}</ref> was announced in July 2006, to consolidate NORAD's day-to-day operations at [[Peterson Air Force Base]].<ref name="After 4 Decades, a Cold War Symbol Stands Down, 29 July. 2006, by Kirk Johnson">{{cite news |url=https://www.nytimes.com/2006/07/29/washington/29norad.html?_r=2&oref=slogin |title=After 4 Decades, a Cold War Symbol Stands Down |author=Kirk Johnson |access-date=31 December 2009 |work=[[The New York Times]] |date=29 July 2006}}</ref> Cheyenne Mountain remains on "warm standby", staffed with support personnel.

{|class="wikitable" style="margin: 1em auto 1em auto;"
|-
| colspan="14" style="background:silver; text-align:center;"| '''Former NORAD Regions/Sectors'''
|-
| 
| 1966
| 1967
| 1968
| 1969
| 1970–1983
| 1984
| 1985–1986
| 1987
| 1988–1990
| 1991–1992
| 1993–1995
| 1996–2005
| 2006–2009
|-
| [[20th Air Division]]
| style="text-align:center;" colspan="2"| 1966–1967
| style="text-align:center; border:none"| 
| style="text-align:center;" colspan="2"| 1969–1983
|-
| [[21st Air Division]]
| style="text-align:center;" colspan="2"| 1966–1967
| style="text-align:center; border:none"| 
| style="text-align:center;" colspan="2"| 1969–1983
|-
| 22nd Air Division
| style="text-align:center;" colspan="8"| 1966–1987
|-
| [[23rd Air Division (United States)|23rd Air Division]]
| style="text-align:center; border:none" colspan="3"|
| style="text-align:center;" colspan="5"| 1969–1987
|-
| [[24th Air Division]]
| style="text-align:center; border:none" colspan="3"|
| style="text-align:center;" colspan="6"| 1969–1990
|-
| [[25th Air Division]] 
| style="text-align:center;" colspan="9"| 1966–1990
|-
| [[26th Air Division]]
| style="text-align:center;" colspan="9"| 1966–1990
|-
| [[27th Air Division]]
| style="text-align:center;" colspan="4"| 1966–1969
|-
| [[28th Air Division]]
| style="text-align:center;" colspan="4"| 1966–1969
| style="text-align:center; border:none" colspan="2"| 
| style="text-align:center;" colspan="4"| 1985–1992
|-
| [[29th Air Division]]
| style="text-align:center;" colspan="4"| 1966–1969
|-
| [[30th Air Division]]
| style="text-align:center;" colspan="3"| 1966–1968
|-
| [[31st Air Division]]
| style="text-align:center;" colspan="4"| 1966–1969
|-
| [[32d Air Division|32nd Air Division]]
| style="text-align:center;" colspan="4"| 1966–1969
|-
| [[34th Air Division]]
| style="text-align:center;" colspan="4"| 1966–1969
|-
| [[35th Air Division]]
| style="text-align:center;" colspan="4"| 1966–1969
|-
| [[36th Air Division]]
| style="text-align:center;" colspan="4"| 1966–1969
|-
| [[Western Air Defense Sector#History|Western Air Defense Sector]] (WADS)
| style="text-align:center; border:none" colspan="7"|
| style="text-align:center;" colspan="4"| 1987–1995
|-
| [[Eastern Air Defense Sector#History|Eastern Air Defense Sector]] (EADS)
| style="text-align:center; border:none" colspan="7"|
| style="text-align:center;" colspan="6"| 1987–2009
|-
| [[Southeast Air Defense Sector]] (SEADS)
| style="text-align:center; border:none" colspan="7"|
| style="text-align:center;" colspan="5"| 1987–2005
|-
| [[Southwest Air Defense Sector]] (SWADS)
| style="text-align:center; border:none" colspan="7"|
| style="text-align:center;" colspan="4"| 1987–1995
|}
{{clear}}