U.S. Navy divers, specialized in handling explosive material, have been searching for clues on how this piece of spy equipment operated. SUBSCRIBE: https://bit.ly/2Zq0dU5 SIGN UP to get the daily GMA Wake-Up Newsletter: https://gma.abc/2Vzcd5j VISIT GMA: https://www.goodmorningamerica.com FOLLOW: TikTok: https://tiktok.com/@gma Instagram: https://instagram.com/GoodMorningAmerica Facebook: https://facebook.com/GoodMorningAmerica Twitter: https://twitter.com/gma WATCH: https://abc.go.com/shows/good-morning-america https://hulu.tv/3WXqiTV #gma #chinesespyballoon #china# surveillance #china