While at the fargo blues festival this object flew directly overhead. at first i thought it was a drone, but it rotated quite quickly and there was a reflective portion or a light on it that flashed or reflected sunlight. it was travelling from the sse to nnw at approximately 60 mph at an altitude of approximately 500 feet. its rotation was about 1rpm x 10 seconds. i observed it for about 1 minute as it disappeared into the north west and it was very near the fargo airport. other people saw it and thought it was a drone. i took pictures with my iphone and i absolutely disagree that it is either a drone or a balloon object. it seemed controlled and flew purposefully with intent. the object i saw was exactly as the one shown on this video beginning at frame 3:43 to 4:12 https://www.Youtube.Com/watch?V=zlns-m4juxe#t=246.512699