172d Fighter-Interceptor Squadron

172d Air Support Squadron
Airman 1st Class Nickolas Holbrook, 110th Airlift Wing, Communications Flight, prepares simulated rockets for overhead C-130s at Grayling Air Gunnery Range, Frederic, Mich.
Active	10 February 1943 – present
Country	United States
Allegiance	United States  Michigan
Branch	United States Air Force   Air National Guard
Type	Squadron
Role	Airfield Support
Part of	Michigan Air National Guard 110th Operations Group
Garrison/HQ	Kellogg Air National Guard Base, Battle Creek, Michigan
Engagements	World War II
Insignia
172d Air Support Squadron emblem

The 172d Air Support Squadron is a unit of the Michigan Air National Guard 110th Airlift Wing located at Kellogg Air National Guard Base, Battle Creek, Michigan. The 172d was last equipped with the C-21A Learjet before the aircraft were transferred in 2013.

The squadron was first organized during World War II as the 375th Fighter Squadron. It saw combat in the European Theater of Operations as an element of VII Fighter Command before returning to the United States, where it was inactivated.

In May 1946, the squadron was allotted to the National Guard as the 172d Fighter Squadron. During the Korean War, the squadron was called into federal service and acted in an air defense role until being returned to the Michigan Air National Guard in 1952. It had various flying missions, including fighter, reconnaissance and airlift until 2013, when it was converted to a support unit.

The squadron was first activated at Richmond Army Air Base as the 375th Fighter Squadron and equipped with Republic P-47 Thunderbolts. The squadron trained under I Fighter Command in the mid-Atlantic states. It also flew air defense missions as part of the Philadelphia Fighter Wing. The squadron deployed to the European Theater of Operations, where it became part of VIII Fighter Command in England during November 1943.