Incident #100 Sighting Report — Pietarsaari, Finland, 5 January 1948

This document contains a series of reports and administrative records regarding Incident #100, a sighting of an unidentified aerial object that occurred on January 5, 1948, in Pietarsaari, Finland. The report, filed by the US Military Attache in Helsinki, describes a single, shining object observed for approximately 10 seconds. The object was reported to be moving from north to south, and eyewitnesses claimed that the object ejected flames and left grey streaks in the sky. The documentation includes a standard check-list for unidentified flying objects, an airgram from the US Military Attache to the Director of Intelligence in Washington, and an evaluation note. The official evaluation concluded that while the information provided was insufficient to definitively identify the object, the details were consistent with a meteoric phenomenon. The document also references other contemporary reports, including a sighting near Vaasa on January 3, 1948, and mentions that the Finnish press had begun using the term 'flying saucers' to describe such light phenomena. Additionally, the file contains an index of evaluations extracted from the Project Grudge report, categorizing various incidents by their probability of being astronomical in nature. A final note indicates that a separate incident from January 7, 1948, in Godman, Kentucky, was evaluated as a balloon and filed under a different accession number.