Cigar-shaped object with portholes in Illinois

Summary

A witness in Illinois reported a cigar-shaped object with portholes in 1959. The object, greenish in color, was seen for 3-4 seconds and moving northeast. It was notable for having an exhaust flame 1.5 times its size. Although initially considered a meteor, the detailed description suggests something more unusual. The lack of photos or radar data complicated the evaluation, but the witness considered their account reliable.