5. LENGTH OF OBSERVATION 11. BRIEF SUMMARY AND ANALYSIS 30 Minutes Observers watched object start and stop while moving in its 6. TYPE OF OBSERVATION northerly direction. The object circled to the left, rose Ground-Visual and was gone evidently to the north. Observers were approx- 7. COURSE mately 7 miles SW of Sergeant Bluff. N A weather balloon was released from the top of the admin- 8. PHOTOS istrative office located at the Sioux City Municipal Airport in Sergeant Bluff, Iowa. The general direction of the