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This issue contains UFO sighting reports and analysis. The primary content documents a missile-like projectile observed traveling from Malmberg, Denmark to Oslo, Norway at approximately 50,000 feet, moving at extraordinary speed (four seconds to cross the horizon) and emitting a bluish-green flame without leaving a visible trail. The text notes similar sightings in Sweden, Norway, and Finland, and mentions heavy water production in Hjucen. Observers included a Norwegian pilot and co-pilot who served with the Royal Norwegian Air Force in Great Britain. The material includes an "Incident Index" extracted from Project Grudge Report, categorizing sightings by probability of astronomical explanation, with numbered incident references. The catalog appears to be evaluating various unidentified aerial phenomena reports.