Unidentified tubular object over Portsmouth 1951

Summary

In July 1951, a U.S. Air Force officer reported an unusual aerial object over Portsmouth, New Hampshire. The document describes a long tube with fins, 100 to 200 feet long, resembling fused glass with black polka dots. It left no trail or sound and vanished quickly. The detailed description is both vivid and puzzling.

The case was investigated by the OSI, but the object remained unidentified. The official report concludes with no conventional explanation, ruling out balloons, aircraft, or astronomical phenomena. This document is a classic example of 1950s UFO reports, with precise observations and an open-ended conclusion.