On September 18–24 fighter aircraft conducting the NATO Air Policing Mission in the Baltic states were scrambled once to identify and escort aircraft of the Russian Federation flying in violation of flight rules in international airspace over the Baltic Sea.
On September 21 NATO Air Policing fighter jets intercepted two SU-30SM and one KA-27 aflight from Kaliningrad to international airspace and back. Their onboard transponders were switched off, the crews were not maintaining radio communication with the regional air traffic control centre and did not have pre-filed flight plans.
