Documents / Report
This August 1949 technical report from the US Air Force Air Materiel Command presents Project Grudge's investigation of unidentified flying objects through January 1949. Drawing on consultants including Dr. J. A. Hynek, Rand Corporation, the Air Weather Service and Dr. P. M. Fitts, it explains most of 244 incidents as balloons, aircraft, astronomical phenomena, hoaxes or psychological errors. It concludes the objects pose no direct threat to national security and recommends reducing the investigation in scope.
Inolident g134, 134a — Worroe, Michigan — 28 Lay 1644 There is no direct astronomical explanation for this incident. This investigator wishes to call attention to the fact that the objects observed were seen at essentially the same level as the lower cloud stratum and that there was a high overcast. Could it be that these officers saw successive shafts of sunlight, through breaks in the high overcast, illuminating small portions of the lower cloud stratum apparent speed of the objects could then have been a combination of the relative velocity of the C-47 and the projected motion of the break in the overcast.
Report, from the classic collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 413 pages are in the text index: search them above, or from the library's search.