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 "B-17G &quot;Flying Fortress&quot; No. 44-83690"): It was built by the Douglas Aircraft Company and delivered for use on May 9, 1945.
Relevant evidence: No