Question: The Champaign Aviation Museum is an aviation museum in Urbana, Ohio, in which country, the museum and its volunteers are restoring a B-17 Flying Fortress back to flying status, a our-engine heavy bomber developed in the 1930s for the United States Army Air Corps (USAAC)?
Sentence (from "United States Army Air Corps"): During World War II, although not an administrative echelon, the Air Corps (AC) remained as one of the combat arms of the Army until 1947, when it was legally abolished by legislation establishing the Department of the Air Force.
Relevant evidence: No