OSU high-altitude balloon expert talks about Chinese surveillance balloon shot down by U.S.

OKLAHOMA CITY (KFOR) - On Saturday the U.S. downed a Chinese surveillance balloon off the Carolina coast. According to the defense secretary, the balloon was being used by China to monitor strategic sites in the continental United States. 

The giant balloon was the size of three school buses and floated across the country for several days. 

An Oklahoma State University expert on high-altitude balloons told KFOR, with the size of the payload that it was carrying, it could have...