Triangular UFO sighted near Seguin Texas in 1961

Summary

In April 1961, a witness near Seguin, Texas, observed a triangular glowing object while driving. The object, described as approximately 300 to 400 feet long with curved edges, remained stationary in the sky for five minutes. Although initially intriguing, the investigation suggested it was likely a weather balloon released from San Antonio Airport. Prevailing winds matched the sighting location. However, the report noted several inconsistencies in the witness's account.