PROJECT 10073 RECORD 1. DATE - TIME GROUP 2. LOr ION 30 Jun 47 Boise, Idsho 3. SOURCE 10. CONCLUSION Civilan Astro (SUN DOG) 4. NUMBER OF OBJECTS Ome 5. LENGTH OF OBSERVATION 11. BRIEF SUMMARY AND ANALYSIS A few minutes Observer sighted a half circle object which was stationary. 6. TYPE OF OBSERVATION 6. TYPE OF OBSERVATION It was bright & silvery and seened to be clinging to a cloud. Cround-Visual 7. COURSE Stationary 8. PHOTOS □ Yes □ Yo No 9. PHYSICAL EVIDENCE ☐ Yes P No FORM FTD SEP 63 0-329 (TDE) Previous ditione of this form may be used.
D 5151 Idaho Occupution of obsorvor otse, Idaho Placo of tionB Idaho 3.000 ood Dirontio Dironti Doctios Sohnd Spland 'otstate Not 182 Shepo Odor dotocted noo Romarks fover
UNCLASSIFIED
Incident 23 -- Boise, Idano -- 30 June 1947 It seems exeeedinaly probatle that the cuject ouserved in tnis incident was a comoination sum-cloud effect. The altitude of the sun was 300, azimuth 2300. At that time of the afternoon, the sun's position was such that it could easily have illuminated a background cloud which was perhaps almost entirely covered by a foreground cloud. (scise weathor reports indicate an entirely foreground cloud. (cise weathor reports indicate an entirely glear sky, cut the report of the ineident itself states that the clear sky, cut the report of the ineident itself states that the ouject "seemed to bo clin;ing to a huge cloud.") ouject "seemed to bo clinjing to a huge cloud.") This investigator himself has ouserved such effects.
HEADQUARTERS AIR MATERIEL COMAND Kright-Pettereon Lir Foroe Base Deyton, Chio KCIAXO-5/HTS/r2 Jen 5 1949 MCIAXO SUBJECT: ProJect "SIGN" TO: Chief, Air Weather Service, Andrews Air Force Base, Washington 25. D. C. ATTH: DSS i 1. Project "SIGN" is responsible for the colleotion, investi- getion end interpretation of date relative to eighting of unidentified flyirg obfeote. Atteched Inoident Susmariss 1 thru 172 from the files of Project "SIGN" are forwarded for study and recommendatione as to which of the incidents may be eliminated ee belloone released on routine eymoptio ascents by the Air Weather Service, the Navy Aerological Service or the United States Weather Bureau. The summariee ettached may be retained in your heedquarters for working end reference purposes.e 2. The Air Weether Service is the only sgenoy of its type that has been weked to aesist in the accomplishment of Project "SIGN" except has been eeked to aesist in the sccomplishment of Project "SIGN" except that the United States Veather Bureau has provided information on ball lightning. Reseerch projects in which balloons ere used end which are conduoted or sponecred by the Army. Ravy or United States Air Force ere conduoted or sponscred by the Army. Navy or United States Air Force ere checked by the Intelligenos Department of this Command. These checks areusually made direot from the Project "SIoN" Office, MClAXO-3. These cheoke are distinot from the check of synoptic balloon flighte mede by cheoke are distinot from the check of eynoptic balloon flighte mede by weather wervice stations of the Air Force, the Navy and the Department weather wervice stations of the Air Force, the Navy and the Department of Commeroe. (U. S. Weather Bureau) requested of Air Veather Service. 3. It is the opinion of this office.that the below listed inoi- dents ers those having the greatest poesibility of being balloons. This list doss not elimimate the possibility that many of the remaining incidents are balloons. gh4 50 91 213 155 24 25 52 92 115 156 28 72 96 126 157 11 30 73 104 1山1 159 24 32 8 105 145 163 16 32 87 107.8.9 151 167 22 33 89 112(see122) 154 169 23 4s 1-84481-A
Hq AC, Chief. Air Weether Service, nesningoon 47. Subj: Projeot "SIGN" 4. The form weed in interrogating witneeses to sightinge is inclosed en e metter of interest. Comment ss to poesible improvement of the "Essential Elements of Informmtion" in regard to routine symoptio balloon flighte is invited. 5. It is requested that correspondence be forwarded to the Conmanding General, Headquarters, Air Materiel Commend, attention MCIAXO-3. POR THE COLLJANDING CEKERAL: 2 Imls: for H.. MOY Summaries 1-172 inql Colonel, USAF "EEI" Chief, Intelligenoe Dept Copies furnished: AFOIR. Hq. USAF Capt Trakowski, Geophyeios Lab Major Major Kodis, MCREEP Kodis MCREEP Colomel Neal, Colonel Meal, MCLAWS MCLAVS T-84481-A
Dr HYNEK'S EVALUATIONS EXTRACTED FROM PROJECT GRUDGE REPORT. INCIDENT INDEX 1. Astronomical C. Eigh probability: v26, 27, 30, 31, 32, 33, 84, 48, 49, 59, 60, 66, 69, 70, 94, 95, 96, 97, 98, 101, 102, 103, 104, 116, 119, 132, 136, 140, 147,148,158,174,184,185,187,197,203,204,208,216, 219, 258. b. Fair or low probebility: 19，20，2324，28，35，35，46，50，03，67，80，82，93，1C0, 112, 120, 121, 129, 130, 144, 153, 165, 166, 167, 175, 192, 199，202,205,220,230,240. 2. Non-astrononicel tut suggestive of other explenations 8. a. #3,11,22,41,42,53,54,73,81,83,91,92,113,114,115, Balloons or ordinary airoraft: #3，11,22,41,42,53,54,73,81,83，91,92,113,114,115, Balloons or ordinary airoralt: 126,131,138,141,145,155,156,157,159,160,161,163, 126,131,138，141，145,155,156，157,159,160,161,163, 169, 171, 173, 178, 180,182,188, 190, 194, 195, 190, 198, 169, 171, 173, 178, 180,182, 188,190, 194,195, 190, 198, 200201，209，210，217，222,235，237，239. b. Rookets, flares or falling bodieg: be Rookets, flares or falling bodieg: #4，5，6，7，8，9，12，13，14，15，16，25，56，65，78，106，107， 108,109.133,170.211,218. 108,109.133,170,211,218. C. Misoellaneous (reflections, suroral streemors, birds, eto.)s Misoellaneous (reflections, suroral stresnors, birds, eto.): 128 146 164, 181, 189, 214. 221, 231. 234. #59,89,123,124,128,146,164,181,189,214,221,231,234. S. Won-astronomical, with no explanation evident Lack of evidence preoludes explanation: #38,44，45，47,55。57，72,86，87,88,90，99,110,117,118, 125,127, 157,139, 149,150, 177,179, 191,206, 212,213, 229.232。233. b。 Evidence offered suggests no explanation: 1，2，10，17，21，29，37，40，51，52，58，61，62，64，68，71。 75,76,77,79,84,105,111,122,135,151,152,154,162. 168。172,176,183,186,193,207,215,223,224,225,226, 227,236,241,242,243, 244, 134.