Over the last few days the U.S has been on alert for a suspicious high-altitude balloon which they believe is a foreign spy balloon perhaps of Chinese origin. They said they surveillance balloon was flying so high that it was above commercial flight traffic. Shooting it down was not an option as the debris could have rained down in populated areas. It was first spotted in the area of Montana on Wednesday. "The United States Government has detected and is tracking a high altitude surveillance balloon that is over the continental United States right now," Pentagon Press Secretary Air Force Brig. Gen. Pat Ryder said Thursday during a press briefing. "The U.S. government, to include NORAD (North American Aerospace Defence Command), continues to track and monitor it closely."