Lineage. Constituted as USAF Hospital, Tyndall on 16 Sep 1970. Activated on 8 Oct 1970. Redesignated as 325 Medical Group on 15 Mar 1987.Assignments. Air Defense (later, USAF Air Defense) Weapons Center, 8 Oct 1970; 325 Tactical Training (later, 325 Fighter) Wing, 1 Sep 199l-.Stations. Tyndall AFB,