The training of B-29 aircrews and the testing of prototype atom bombs was the last major contribution of Wendover Field during World War II. After war's end, some crew training continued, but at a reduced level. For a while, B-29s which had returned from the Marianas were flown to Wendover for storage. In the summer of 1946, the Ogden Air Technical Service Command at Hill Army Air Field north of Salt Lake City assumed jurisdiction over all operations at Wendover Field except engineering and technical projects.