Pentagon officials said the U.S. is tracking an alleged spy balloon that was floating over the continental U.S. Officials decided not to shoot it down. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': https://bit.ly/3uHCDO5 WATCH OTHER FULL EPISODES OF WORLD NEWS TONIGHT: http://abc.go.com/shows/world-news-tonight WATCH WORLD NEWS TONIGHT ON HULU: https://bit.ly/3iQLwPp #abcnews #worldnewstonight #china #spies