After the night and day missile strikes of the Russian Federation on the cities of Ukraine in the airspace of Europe, the following situation is observed on military aircraft of NATO countries

Most likely, it carries out target designations for the joint air defense and missile defense system in Western Ukraine for Patriot launchers installed on Ukrainian territory.
NATO air defense during massive missile launches on the territory of Ukraine maintains constant control over its territory.
To prevent the possibility of Russian cruise missiles flying around Ukrainian air defense systems in the south.
There is an opinion that the Russian Federation can additionally launch cruise missiles on the territory of Ukraine from the Mediterranean Sea.
However, in this case, missiles can only fly over the territory of NATO countries.
The Boeing tanker during the launches of Russian missiles ensured the constant presence of NATO aircraft in the sky in case it was necessary to protect against missile strikes on the territory of Poland.
It is also possible for fighters to work on targets in the sky of Ukraine during the window in the spans of Russian military satellite observers.