February 15, 1979

1979: A Minuteman III missile launched from Vandenberg AFB, Calif., to the Kwajalein missile range, where it deployed three Mark 12A reentry vehicles. The Minuteman III missile entered service in 1970, with weapon systems upgrades included during the production run from 1970 to 1978 to increase accuracy and payload capacity. As of September 2019, the USAF plans to operate it until 2030.