1. DATE - TIME GROUP 6 Feb 53 6/0930Z 2. LOCATION Bonellis, Washington (20 Min S. Spokane) 3. SOURCE AF Pilot 10. CONCLUSION BALLOON 4. NUMBER OF OBJECTS One 5. LENGTH OF OBSERVATION 3-5 Min. 11. BRIEF SUMMARY AND ANALYSIS Round white light traveled at an est speed of 150-200 knots at approx 7000' msl. Maneuvers consisted of circling several times, flashing on & off, noticeable increase in speed, and disappearing in a S direction. Object was observed by pilot of T-36 a/c. 6. TYPE OF OBSERVATION (Air-Visual) 7. COURSE NE 8. PHOTOS □ Yes [X] No COMMENT: 1. Weather balloon probably in the area of slight light from Geiger Field Weather Detn. See incident folder for explanation. 2. Weather records show balloon released from Geiger Field not Fairchild at 0900Z. Was lost in the clouds after rising to 3,000'. Could have very easily caused the sighting. 9. PHYSICAL EVIDENCE □ Yes [X] No