On August 9 – 15 fighter aircraft conducting the NATO Air Policing Mission in the Baltic states were scrambled two times to identify and escort military aircraft of the Russian Federation in the international airspace over the Baltic Sea.
On August 11 NATO fighter aircraft intercepted one aircraft flying with its onboard transponder on, without the flight plan (it was provided later), maintaining radio communication with the regional air traffic control center.
On August 12 NATO fighter aircraft intercepted two aircraft flying from mainland Russia to Kaliningrad. Their onboard transponder was on, the crews had no flight plan but maintained radio communication with the regional air traffic control center.
MoD archival photo