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‘ cn . i bi” aay 2 i :B/Ltr from AMD dtd 5 Jan 19l9 Subj: Projeot "SIGN AWS DSS lst Ind 24 Jan 1949 ERVIOE sh- ington 25, D. C. TO: Commanding General, Air Matoriel Command,W Air Force Base, Dayton, Chio ATTN: BCIAXO Investigations bv this headquarters revoal that a synoptic weather balloon could have beer at the location whsre sightings . wore reported in'the following incidents. In compiling this list consideration was given to the wind diroction and speed at the surface and aloft at the scheduled time of balloon release, and the location of the nearest weather station making balloon obser- vations. 126 148 XERR XERR 155 NM- NM 166 81 81 169 87 172 FOR THE AIR WEA SERVICE SERVICE 13/ /s/ W. A. Host W. A. West 2 Incls: W. A. WEST n/o Lt. Col., USAF Adjutant Genoral
2. The Air Weather Sorvica is ths only agenoy that has been Projeot "3IGn" except that the Unitod States Weather Bureau has provided information on ball lightning. Research projeota n whioh balloons are used ard which are checked by the Intelligence Intelligence Department of this Department of this Conwand. These cheoks Those cheoks arousually mada direot from the Projeot "SIon" mada direot from the Projeot "SIan" OffiOO, MCIAXO-3. These oheoka are oheoka are distinot from the ohsck of synoptio distinot from the oheok of synoptio balloon balloon flights made by flights made by weather service stations of the Air Forco, the weather service stations the Air For , the Navy and th Department of Commerce, Bursau) requested or Ai rvics. 3. It is the opinion of this offioe, that tho bolow listed inoi- danta are those having the greatest possibility of being balloons. This list does no elimimto the posaibility that mary of the remaining incidents ars balloons. 1 1 113 155 115 156 126 157 JONRANRY RXEREG8 104 342 159 8 105 112 163 107,3,9 151 $169 112(Sea122) 154 T-481-
Hq Alc, Chief, Air Werther Sorvios, Washington 25, D. C. Subj, Projeot "SIGN" 4. The form used in interrogating sightings is inolosed as a matter of interest. Conment aa to poasibla improvement of the "Essential Elements of Information" rogard routine 5. It is forwardad to the " Commanding Gener teriel Command, attontion MCIAXO-3. FOR THE GENERAL: /3/ W. R. Clingerman, Col, USAF 2 Inola, for H. M. MOCOY Summaries 1-172 inql Colonol, USAF "EEI" Chief, Intelligence Dept 3 Coplon furnished, AFOIR, Hq. USAF AFOIR, Hq. USAF Capt Trakowski, Geophysios Lab Capt Trakowski, Geophysios Lab Major Kodis, MCREEP Colomel Neal, MLANS Colomel Neal, MLAMS 3s1-1
219, 238. b. Fair or low probability: 1, 20, 23, 24, 28, 35, 35, 46, 50, 63, 67, 80, 82, 93, 1CO, 112, 120, 121, 129, 130, 144, 153, 165, 166, 167, 175, 192, 199, 202, 205 220 230, 240. 2. Non-astrononioal explanations B. Balloons or ordinary airoraft: 3, 11, 22, 41, 53, 54, 73, 81, 83, 91, 92, 113, 114, 115, 126, 131, 138, 141, 145, 155, 156, 157, 159, 160, 161, 163, 169, 171, 173, 178, 180, 182, 138, 190, 194, 195, 196, 193,. 200, 201, 209, 217 . 222 235 237 239. b. Rockets, flares or falling bodies: 4,5,6,7 9,12,13, 15, 16, 25, 56, 65, 78, 106, 107, 108, 109, 13 170, 211, 218. o. Miscellansous (reflsctions, auroral streamers, birds, ato.) 39, 89 3. evident a. 38, 44,45,47,55, 125, 127, 137, 1 149. 150.177 , 213, 229, 232, 233. b. Evidonce offered sugzests no sxplanation ¥1, 2; 10, 17, 21, 29, 37, 40, 51, 52, 58, 51, 62, 64, 58, 71, 122, 135, 151, 152, 154, 162, 168, 172, 176, 183, 186, 193, 207, 215, 223, 224, 225, 225, 227, 236, 241, 242, 243, 244, 134. 1