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The very first Atlas D operational ICBM sites, these were above ground with open support towers. These missiles were on alert from 31 October 1959 until 1 May 1964. After going off alert in 1964, Alpha 1 and 2 were used by the USAF for Atlas satellite rocket launches until 1974

Vandenberg Space Force Base is a United States Space Force Base in Santa Barbara County, California. Established in 1941, Vandenberg Space Force Base is a space launch base, launching spacecraft from the Western Range, and also performs missile testing. The United States Space Force's Space Launch Delta 30 serves as the host delta for the base, equivalent to an Air Force air base wing. In addition to its military space launch mission, Vandenberg Space Force Base also hosts space launches for civil and commercial space entities, such as NASA and SpaceX.