 The 357th Fighter Group was re-designated the 121st Fighter Group on August 21, 1946, and the 121st FG then allocated to the OHANG.In 1947, with the passage of the National Security Act of 1947 creating a separate Air Force, the Ohio Air National Guard came into being as a federally recognized reserve component.The 121st FG received its federal recognition on June 26, 1948.