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 "Champaign Aviation Museum"): The Champaign Aviation Museum is an aviation museum in Urbana, Ohio, United States.
Relevant evidence: Yes