Documents / Analysis
Special Report No. 14 was issued by the U.S. Air Force's Air Technical Intelligence Center on 5 May 1955. It is a statistical study of about 4,000 reports of unidentified aerial objects from June 1947 to December 1952. The reports were reduced to IBM punched cards and analyzed with methods including chi square tests. The report concludes that the reports it examined are very unlikely to represent technology beyond present scientific knowledge, and it notes that no case produced valid physical evidence.
“US Navy”1 page
CODE 67 RANK EQUIVALENT CODE 76 EVALUATION OF OBSERVER RELIABILITY t X Y 0 1 2 3 U 5 6 7 8 9 Officer Lt. 2nd Lt. 1st Capt. Maj. Lt« Col. Col. Brig. Gen. Maj. Gen. Lt* Gen. General X Y 0 1 2 3 5 6 7 8 9 CODE 77 EVALUATION X Y 0 Complete 1 Quite 2 Fair 3 Doubtful 4 Poor 5 Not 6 7 8 9 Can't be Private Private, 1st Cls. Corp. Serg. S, T. Serg. M. Serg, Warrant Off. Chief Warrant \ OF REPORT RELIABILITY judged CODE 79-80 FINAL IDENTIFICATION X Y 0 1 2 3 4 5 6 7 8 9 CODE X y 0 l 2 3 5 6 7 8 9 I Complete Quite Fair Doubtful Poor Not Can't be judged 78 PRELIMINARY IDENTIFICATION Possibly Balloon Astronomical Aircraft Light phenomenon Birds Clouds, dust, etc. Rocket or missile Psychological manifestations Electromagnetic phenomenon Other X Probably Y 0 Balloon 1 Astronomical 2 Aircraft • 3 Light Phenomenon U Birds 5 Clouds, dust, etc. 6 Re»ke%-eF-a49eile Insufficient information 7 Psychological manifestations 8 gle&t.Fe»agRe*ie-pheReaeHeR Unknown 9 Other 295 and 296
Analysis, from the classic collection. The PDF is mirrored here; the original link is under it. 309 pages are in the text index: search them above, or from the library's search.