When even Obi-Won knows this is a squirrel.
Flying squirrels have no business at 30,000 ft. That should be illegal.
There has been documentation on this topic in the old Soviet Union for a long long time—for those who have done the homework.
This book is a place to start:
https://www.amazon.com/RUSSIAS-ROSWELL-INCIDENT-Amazing-Former/dp/1520724004
If you want to deeper into the weeds this book is very good:
https://www.amazon.com/UFO-Chronicles-Soviet-Union-Samizdat/dp/0345373960
I wish folks would do the work before spouting an opinion.