1985 – 30 September 1990 Stations Silver Lake Air Warning Station, Washington, 25 October 1948 McChord Air Force Base, Washington, 14 September 1951 – 30 September 1990 Components Sectors Southwest Air Defense Sector: 1 July 1987 – 30 September 1990 March Air Force Base, California Northwest Air Defense Sector: 1 July 1987 – 30 September 1990 McChord Air Force Base, Washington Portland Air Defense Sector: 8 June 1958 – 1 April 1966 Adair Air Force Station, Oregon Reno Air Defense Sector: 15 February 1959 – 1 July 1960 Stead Air Force Base, Nevada Seattle Air Defense Sector: 8 January 1958 – 1 April 1966 McChord Air Force Base, Washington Spokane Air Defense Sector: 8 September 1958 – 1 September 1963. Larson Air Force Base, Washington Wings 325th Fighter Wing: 18 October 1956 – 10 February 1960; 1 April 1966 – 1 July 1968 McChord Air Force Base, Washington 4700th Air Defense Wing: 1 September 1958 – 15 May 1960 Geiger Field, Washington 4702d Defense Wing: 7 November 1952 – 8 October 1954 Hamilton Air Force Base, California Geiger Field, Washington 4704th Defense Wing: 10 December 1952 – 8 October 1954. McChord Air Force Base, Washington Groups 57th Fighter Group (Air Defense) Paine Field, Washington, 1 April 1966 – 30 September 1968 78th Fighter Group Hamilton Air Force Base, California, 18 August 1955 – 1 July 1960 84th Fighter Group (Air Defense) Geiger Field, Washington, 15 August – 1 September 1958 325th Fighter Group (Air Defense) McChord Air Force Base, Washington, 18 August – 18 October 1956 326th Fighter Group (Air Defense) Paine Field, Washington, 18 August 1955 – 10 February 1960 337th Fighter Group (Air Defense), 18 August 1955 – 15 April 1960 Portland Airport 408th Fighter Group (Air Defense) Kingsley Field, Oregon, 1 March 1959 – 15 April 1960; 15 September 1969 – 1 October 1970 162d Aircraft Control and Warning Group (Federalzed ANG) Larson Air Force Base, Washington, 25 June 1951 – 6 February 1952 503d Air Defense Group Portland Airport, Washington, 8 October 1954 – 18 August 1955 505th Aircraft Control and Warning Group Silver Lake AWS, Washington, 21 May 1947 McChord Air Force Base, Washington, 15 August 1951 – 6 February 1952 529th Air Defense Group Paine Field, Washington, 8 October 1954 – 18 August 1955 567th Air Defense Group Hamilton Air Force Base, California, 8 October 1954 – 18 August 1955 – 1 July 1960