| Unit Name: | Southwest Air Defense Sector |
| Dates: | 1987–1994 |
| Country: | United States |
| Branch: | United States Air Force |
| Role: | Air Defense |
| Nickname: | Sierra Pete |
The Southwest Air Defense Sector (SWADS) is an inactive United States Air Force organization. Its last assignment was with the First Air Force, being stationed at March Air Force Base, California. It was inactivated on December 31, 1994.
The Los Angeles Air Defense Sector (SAGE) (LAADS) was designated by Air Defense Command in February 1959 while NORAD's July 25, 1958, SAGE Geographic Reorganization Plan was being implemented.[1] Assuming control of former ADC Western Air Defense Force units, the sector's region consisted of ADC atmospheric forces (fighter-interceptor and radar units) located in southern California north to Santa Barbara and the southern Central Valley. The Manual Air Direction Center (MDC) was at Norton AFB, California, until the Air Defense Direction Center (DC-17) was completed in 1959 for the Semi Automatic Ground Environment.
On April 1, 1966, LAADS was inactivated, as did the other 22 sectors in the country. Most of its assets were assumed by the 27th Air Division.
Reactivated as the Southwest Air Defense Sector (SWADS) on July 1, 1987 at March AFB, California, in the 26th Air Division; the sector received the 26th AD assets when it became inactive on September 30, 1990. SWADS was responsible for the atmospheric defense of approximately one-fourth of the Continental United States. Its eastern border was at the intersection of the 36th parallel north and 97th meridian west south to the Gulf of Mexico at the 28th parallel north. Its region extended west to include the region south of the 36th parallel north to the Pacific Ocean at the 122nd meridian west. It came under the Continental NORAD Region (CONR) Headquarters at Tyndall AFB, Florida. The Joint Surveillance System Sector Operations Control Center (SOCC) was at March AFB and Air Route Surveillance Radar (ARSR) data from several JSS radar stations and tethered aerostat radar balloons (e.g., Ground Equipment Facility J-31 near Los Angeles).
On January 1, 1995, the SWADS consolidated with the Northwest Air Defense Sector, headquartered at McChord AFB, Washington and the combined command was designated as the Western Air Defense Sector (WADS).
Air National Guard units aligned under 1AF (AFNORTH) formerly with an air defense mission under SWADS were:
Inactivated on 1 April 1966; redesignated as 27th Air Division
Inactivated on 31 December 1994, assets reassigned to Northwest Air Defense Sector
Oxnard AFB, California, 1 October 1959 – 1 April 1966
Davis-Monthan AFB, Arizona, 1 January 1960 – 1 May 1961
George AFB, California, 1 October 1959 – 1 April 1966
Castle AFB, California, 1 August 1963 – 1 April 1966
Ajo AFS, Arizona, 1 January 1960 – 1 May 1961
Santa Rosa Island AFS, California, 1 October 1959
Lompoc AFS, California, 1 April 1963 – 1 April 1966
Almaden AFS, California, 1 August 1963
Madera AFS, California, 1 August 1963 – 1 April 1966
Vincent AFB, Arizona, 1 October 1959 – 1 May 1961