The United States recently reported a Chinese "surveillance balloon" flying over the country for several days. This practice of using high-altitude balloons for military and spying missions dates back to World War Two. According to the report, these balloons are used for gathering large amounts of aerial data and surveillance. Using satellite and camera technology, these balloons can fly at high altitudes to capture footage of the ground below while providing valuable intelligence to those who operate them. They can also be used to monitor the movements of the enemy and provide data to aid in making quick and strategic military decisions. This is a prime example of how modern technology is being used to gain intelligence and assist military operations.