Joseph Carroll (DIA)
When the U.S. Air Force was established as a separate executive department under the National Security Act of 1947, Secretary of the Air Force W. Stuart Symington, requested FBI Director J. Edgar Hoover to loan General Carroll to the services to organize a U.S. Air Force agency for investigative and counterintelligence functions. He organized and directed this new organization, the AFOSI, along the lines of the FBI rather than the U.S. Army's Criminal Investigation Command (USACIDC or CID). General Carroll was tendered a commission as a colonel, U.S. Air Force Reserve, January 12, 1948. He was ordered to active duty in the grade of brigadier general May 6, 1948, and promoted to major general August 11, 1950.
Michigan Air National Guard
Insofar as possible, units were allotted to Michigan communities that had previously sponsored National Guard units and where state-owned or leased armory facilities were available. Initial priority was given to the organization of the State Headquarters, the 46th Infantry Division, and Air National Guard units. On 29 September 1946, the first post-war units of the Michigan National Guard were activated. 18 September 1947, however, is considered the Michigan Air National Guard's official birth concurrent with the establishment of the United States Air Force as a separate branch of the United States military under the National Security Act.