PROJECT 1007~ RECOKD CARD I 0 v.'o1 Balloon 1956 1 Oklahoma Ci. t . Oklahoma 0 Probabl y Bcll oon 3. DATETIME GROUP 4. 'TYPE OF OBSERVJ..TICt. I )Q{Ground-Vi a u o l ::; GroundRodor Wos Aircroft 0 Probably Atrcroft 0 Po ui bl y A1 rc roft 1 0 A r-Vis u ol 0 Air-Intercept Roder s. PHOTOS 6. SOURCE 0 Woa Aatrono mi o; c l Ji':l~o Civilian (GOC) 0 Probobl y hstronomi c o l 0 Possi bly Astrg'lomicol 1. LENCTH OF OBSERVATION 8. NUMBER OF OBJECTS 9. COURSE 0 Insufficient Ooto for f.,alllotlon two to three ntinute s ~hree E to ~ 10. BRIEF SUMMARY Of SIGHTING Three lights each group appar ently made up of two lights, size o f silver dollar held at arms length. Steadily burning lights heading west. Lights were estimated to be at 5,000 feet. Sound heard was described as a rhy- thmic beat and almost similar to a rumble. One observer described it as ATIC FORM 329 (REV 16 SE P S2) 11. COMMENTS Received b y letter from Comdr Ground Observe r Squadron of Oklahoma City. Concur witl1 the opinion of the reporting officer that this sighting was caused by the aircraft landing at Will Rogers Field with landin g and navigational lights at the t i me of the sighting. .