Duluth Air Defense Sector

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Duluth Air Defense Sector
Duluth Air Defense Sector.jpg
Emblem of the Duluth Air Defense Sector
CountryUnited States
BranchUnited States Air Force
RoleAir defense
Part ofAir Defense Command.svg Air Defense Command
Garrison/HQDuluth Airport
Map all coordinates using: OpenStreetMap 
Download coordinates as: KML
Map of Duluth ADS

The Duluth Air Defense Sector (DUADS) is an inactive United States Air Force organization. Its last assignment was with the Air Defense Command 29th Air Division, being stationed at Duluth Airport, Minnesota. It was inactivated on 1 April 1969.


Established in October 1957 assuming control of former ADC Central Air Defense Force units with a mission to provide air defense of most of Minnesota and western Wisconsin. The organization provided command and control over several aircraft and radar squadrons.

In November 1959, the new Semi Automatic Ground Environment (SAGE) Direction Center (DC-10) became operational. 46°50′10″N 092°12′26″W / 46.83611°N 92.20722°W / 46.83611; -92.20722 (DUADS-SAGE DC-10) DC-10 was equipped with dual AN/FSQ-7 Computers. The day-to-day operations of the command was to train and maintain tactical flying units flying jet interceptor aircraft (F-94 Starfire; F-102 Delta Dagger; F-106 Delta Dart) in a state of readiness with training missions and series of exercises with SAC and other units simulating interceptions of incoming enemy aircraft.

In October 1962, during the Cuban Missile Crisis, a guard at the Direction Center mistakenly identified a bear trying to climb the security fence as a saboteur and rang the alarm, which automatically triggered similar alarms at other bases in the region. A faulty alarm system at Volk Field in Wisconsin led to nuclear-armed interceptor aircraft nearly being launched.[1]

Inactivated April 1966 as part of ADC reorganization and consolidation, the command being redesignated as the 29th Air Division. The SAGE building was remodeled and, in 1985, given to the University of Minnesota Duluth to house the Natural Resources Research Institute signed into legislation to address the struggling economy during the early 1980s recession.


  • Established as Duluth Air Defense Sector on 1 October 1957, Inactivated on 1 April 1966






Interceptor squadrons[edit]

Missile squadrons[edit]

Radar squadrons[edit]

See also[edit]


External image
image icon SAGE facilities

Public Domain This article incorporates public domain material from the Air Force Historical Research Agency.

  • A Handbook of Aerospace Defense Organization 1946 - 1980, by Lloyd H. Cornett and Mildred W. Johnson, Office of History, Aerospace Defense Center, Peterson Air Force Base, Colorado
  • Winkler, David F. (1997), Searching the skies: the legacy of the United States Cold War defense radar program. Prepared for United States Air Force Headquarters Air Combat Command.
  • Maurer, Maurer (1983). Air Force Combat Units Of World War II. Maxwell AFB, Alabama: Office of Air Force History. ISBN 0-89201-092-4.
  • Ravenstein, Charles A. (1984). Air Force Combat Wings Lineage and Honors Histories 1947–1977. Maxwell AFB, Alabama: Office of Air Force History. ISBN 0-912799-12-9.
  • Radomes.org Duluth Air Defense Sector