Another chemtrail in our sky. I really like the term chemtrail, although formally they're called contrails. They're very chemical indeed. Lots of dihydrogen monoxide (DHMO, very, very dangerous) surrounded by concentrated nitrogen with some oxygen and argon. 1/
If you want to know more about DHMO, here's a good link: https://en.wikipedia.org/wiki/Dihydrogen_monoxide_parody
What's at the end of a chemtrail? Precious metal, of course. Usually aluminium is not considered a precious metal, but when it's packed in the form of an E3-A Sentry it really is. Were just 30 kilometres away from Russia's ally, Belarus. Those planes are here to detect threats.