Military says high-altitude balloon detected over Western U.S. doesn't pose a threat

CBS News first reported that the military was tracking the balloon as it traversed the Western U.S. earlier in the day. NORAD, the military command responsible for air defense over the U.S. and Canada, later confirmed it had detected the object and said it was floating between 43,000 and 45,000 feet. Its presence prompted enough concern that the command sent aircraft to investigate.