The fourth mysterious recon balloon shot down over North America.

Is this the first time when jet fighters shoot down recon balloons over North America? 

The fourth mysterious balloon shot down over North America. At least a couple of those balloons flew over 10 000 meters. Those balloons carried gondolas with advanced technology.  And that means that hobbyists don't make them. If some hobbyists are behind those balloons. The electronics can help to track those operators. 

Above this text is the image of one balloon. And there seems to be a combination of solar-panel and probably some kind of wind generator that gives electricity to the systems. Or maybe, that solar panel acted as the sail. The balloon had guidance and engine systems so operators could control them. 

There is one big question. How long have those recon balloons been used against the USA? And are there some other countries targeted for that kind of spying tools?

Is this a brand new idea from some Chinese intelligence chief? If the balloon flies at the same altitude as the jet planes that risks aerial security. 

And if the balloon has a guidance system. It can carry some kind of weapons like glide bombs like JDAM or SDB. Are those balloons some experiments for cheap weapon carriers? If we think that balloons were sent from China, how do operators think they get those balloons back? 

Did they think that balloons can fly around the Earth? And then land nicely in China, and nobody sends aircraft to check them out? Or did they think that nobody was ever interested in those balloons? And nobody opens those capsules of the shot-down balloons? 

Another question is why those balloons are flying at that altitude. The mylar balloon filled with helium or hydrogen cloud flies much higher. A balloon can rise to altitudes of 39-79 kilometers. So why was the sender of those shot-down balloons adjust them to the altitude, where jet fighters can shoot them down? 

https://www.foxnews.com/politics/biden-still-silent-after-three-more-ufos-shot-down-north-america

https://www.space.com/20089-near-space-balloons-science.html

https://www.statista.com/chart/29283/flying-objects-downed-over-north-america/

https://shorttextsofoldscholars.blogspot.com/