UFO in submarine shape seen over Washington DC

Summary

In May 1956, a witness in Washington DC reported seeing objects resembling submarines with a silver color. Initially three objects were observed, which later appeared as one. The objects remained stationary in the sky, drawing the attention of the observer. Due to the nighttime sighting, the recorded time was likely incorrect. Although several explanations were considered, such as balloons or astronomical phenomena, there was not enough information for a conclusive evaluation.