The U.S. is tracking a high-altitude balloon flying over the Western part of the country, U.S. officials told CBS News. Military aircraft have spotted the balloon and determined it is not a threat, but its origin and purpose are still unknown, the officials said.
Sources familiar with the matter who spoke on the condition of anonymity said the balloon was drifting east in the jetstream on Friday at an altitude of more than 40,000 feet. Its presence prompted enough concern that the military sent aircraft to investigate.
One official said the balloon was over Colorado earlier in the day and was expected to be over Georgia by Friday night. The official said the balloon appeared to be made of Mylar and had a small cube-shaped box, about two feet long on each side, hanging below it.
more at https://www.cbsnews.com/news/military-tracking-balloon-western-us-military/