Sioux City, Iowa: Object crosses nose of Mid-Continent DC-3, tower also sees light

At 9:20 p.m. CAA control tower operator John M. Williams at Sioux City, Iowa, saw an odd light in the west and asked Capt. Lawrence W. Vinther of the departing Mid-Continent Airlines Flight 9 to look for it. Still in a climbing turn at about 1,000 feet, Vinther and copilot James F. Bachmeier spotted the object to the north-northwest at about 8,000 feet and 4 miles away; it looked like a B-29 fuselage with wings but no engines and blinked lights like running lights. The object came towards the DC-3, crossed its nose within 200 feet, suddenly reappeared on the other side and paralleled the plane for 2–3 seconds before passing under it and disappearing to the northwest. Vinther described the encounter in Flying magazine, and Eberhart notes it as one of the first reports to enter the CIRVIS system specified by JANAP 146. The account follows the entry in George M. Eberhart's chronology UFOs and Intelligence (CUFOS) and the sources cited there; it is not an independent determination by From Beyond Space.