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  • 21 Communications Squadron (SpOC)

    Lineage.  Constituted as 21 Communications Squadron on 15 Nov 1952.  Activated on 1 Jan 1953.  Inactivated on 8 Feb 1958.  Consolidated (1 May 1992) with the 2163 Communications Squadron, which was designated and activated on 1 Oct 1979.  Redesignated as: 2163 Information Systems Squadron on 1 Jul

  • 21 Expeditionary Reconnaissance Squadron (USAFE)

    Lineage. Constituted 21 Observation Squadron (Light) on 5 Feb 1942. Activated on 2 Mar 1942. Redesignated: 21 Observation Squadron on 4 Jul 1942; 21 Reconnaissance Squadron (Bomber) on 2 Apr 1943; 21 Tactical Reconnaissance Squadron on 11 Apr 1943. Disbanded on 1 May 1944. Reconstituted, and

  • 21 Expeditionary Reconnaissance Squadron (USAFE)

    Lineage. Constituted 21 Observation Squadron (Light) on 5 Feb 1942. Activated on 2 Mar 1942. Redesignated: 21 Observation Squadron on 4 Jul 1942; 21 Reconniassance Squadron (Bomber) on 2 Apr 1943; 21 Tactical Reconniassance Squadron on 11 Apr 1943. Disbanded on 1 May 1944. Reconstituted, and

  • 21 Fighter Squadron (AETC)

    Lineage. Constituted as 21 Fighter Squadron, Single Engine, on 5 Oct 1944. Activated on 15 Oct 1944. Inactivated on 15 Oct 1946. Redesignated as 21 Fighter-Day Squadron on 26 Aug 1954. Activated on 11 Nov 1954. Redesignated as 21 Tactical Fighter Squadron on 1 Jul 1958. Inactivated on 15 Mar 1959.

  • 21 Force Support Squadron (AFSPC)

    Lineage. Constituted as Air Base Squadron, 22 Air Base Group, on 20 Nov 1940. Activated on 15 Jan 1941. Redesignated: 21 Air Base Squadron on 17 Jan 1941; 21 Base Headquarters and Air Base Squadron on 13 Jan 1942. Disbanded on 1 Apr 1944. Reconstituted, and redesignated 21 Mission Support Squadron,

  • 21 Healthcare Operations Squadron (USSF)

    Lineage.  Constituted as 21 Medical Operations Squadron on 26 Sep 1994.  Activated on 1 Oct 1994.  Inactivated on 1 Oct 1998.  Activated on 1 Oct 2003.  Redesignated as 21 Healthcare Operations Squadron on 19 Jul 2019.Assignments.  21 Medical Group, 1 Oct 1994-1 Oct 1998.  21 Medical Group, 1 Oct

  • 21 Intelligence Squadron (AFMC)

    Lineage.   Constituted as Air Force Materiel Command Intelligence Squadron on 10 Aug 2007.  Activated on 13 Sep 2007.  Redesignated as 21 Intelligence Squadron on 9 Oct 2012.Assignments.  Air Force Materiel Command, 13 Sep 2007; Air Force Life Cycle Management Center (attached, 1 Aug-9 Oct 2012),

  • 21 Operational Medical Readiness Squadron (USSF)

    Lineage.   Constituted as 21 Aerospace Medicine Squadron on 26 Sep 1994.  Activated on 1 Oct 1994.   Inactivated on 1 Oct 1998.   Redesignated as 21 Aeromedical-Dental Squadron on 24 Jul 2003.  Activated on 1 Oct 2003.   Redesignated as: 21 Aerospace Medicine Squadron on 21 Jul 2005; 21 Operational

  • 21 Operations Group (AFSPC)

    Lineage.  Established as 21 Bombardment Group (Medium) on 13 Jan 1942.  Activated on 1 Feb 1942.  Disestablished on 10 Oct 1943.  Reestablished and consolidated (31 Jul 1985) with the 21 Fighter Group, Two Engine, which was established on 31 Mar 1944.  Activated on 21 Apr 1944.  Inactivated on 10

  • 21 Space Operations Squadron

    Lineage. Constituted 21st Space Operations Squadron on 10 Jul 1991. Activated on 1 Oct 1991.Assignments. 2d Satellite Tracking (later, 750th Space) Group, 1 Oct 1991-.Stations. Onizuka AFB (later AS) CA, 1 Oct 1991-.Service Streamers. None.Campaign Streamers. None.Armed Forces Expeditionary