Triangular UFO sighted in Brooklyn in 1958

Summary

A man from Brooklyn described a triangular object without wings he saw in the sky in 1958. He observed it for several minutes and compared it to an isosceles triangle, glowing like an electric light. It did not resemble a jet or a balloon, and its slow speed made it unusual. The witness, who had good eyesight, insisted no one else saw it, despite the usual air traffic in the area. His detailed description and the confusion over the object's nature make this an intriguing UFO case.