1. D..\ re TIME G~OuP l Sept 66 0 './0JOOZ Tulsa, Oklanona 3. ~-OliRCE 10. CONCLUSION Satellite (ECHO I) 4. NUMBER OF OoJ:CTS (3 Witnesses: IF.r.HO I was passing ove r the Tulsa area at npprox:iJm. tel.y 2l.OOL, ttraveling in an ESE direction. 5. LENGTH OF OBSERVATION 11. BRIEF SUMMARY AND ANALYSIS Several Hin~ es (.. TYPE OF oss=RVATION 7. COURS!: e. PtiOTOS 9. PHYSICAL EVIDENCE Observer s viol-ted an unusually bright, rather round object with a pulsating lilttt that chane,ed from a red to white as it traveled olvorhe ad. TDE-fR/Msj H. Q,1intan111a, Jr/70916/mhs/12 Sep 66 Request for UPO Inforu1ation on Sighting, 1 Sep 66 Hq USAF ( SAFOICC) .Attn: Mrs. Hunt Reference the attached letter requesting info~r~tion on sightings on 1 September 1966. The following is a suggested reply. a. Dear Mr. Reference your letter of 3 September 1966 concerning your observation of an unusual phenomena over the Tulsa skys on the night of 1 September 1966. Your sighting has been studied in detail and we have round thst you probably observed the aatelll te ECHO I. ECHO I was passing over the '1\llsa area at appro~imate ly 2100 hours on 1 September i traveling in an ESE direction. The description you provided :f.s con- sistent with that of satellite observations. Fluctuations in light ak1n to the tw lin~ of stars can also cause the illusion of zig-zag motion. Indeed, observations show that the fluctuations are closely related to meteorological conditions. . WARREN S. WHt:EI.ER Colonel, USAF Deputy for Technology and fhbsy&tems TD~TR MAJ QUINTANII.IA, JR Ltr, E. FrOst SAF-OICC/hunt/ua/79079/21Sep66 B ia Dade to your letter of September 3 concerniug your observation of an 'Unusual pbeD011renon in the Tulsa sq on tbe night or Septe;~er 1, 1966. Your sigbti.Dg baa studied in detaU, and we feel that you probab]J observed the satellite, ~HO I. ECHO I waa paaaing over tbe Tnlsa area at approxiaetely 9:00 p.m. on 1, traveling in en ESB direction. The description you proYided is consistent with that o~ satellite obaervationa. Flue tuationa in light altin to tbe tvinkl ing ot stars can also cause the illusion or z1gzag motion. Observations shov that the fluctuations are c:1ose~ related to meteorological con- Sincerely, GEORGE P. I JR Chier, C1Til. Branch :uuty Relatione Division o~t.r~ice 0~ t1on Coord CJ -s.rot..C comebk cY -S1.~1-l Reader C1 - -. s~t-C Act1v1tJ oJ