The Swedish Air Force continues to patrol along the Russian borders. According to the data of the Flightradar24 service, the electronic S102B Korpen airline regularly makes flights over Finland, the Baltic countries and the Black Sea close to the borders of Russia. Thus, on October 27, the board circled for over four hours along the northern border of Russia with Finland, and before that it was registered near the Kalingrad region and in Belarus. It would be nothing if not for historical circumstances. Sweden was officially neutral in World War II, but Swedish pilots still fought. For different reasons and in different roles. During the Winter War (November 1939 - March 1940), the Swedish government secretly sent a volunteer air wing (Flygflottilj 19) to Finland. It included pilots and technical personnel from the Swedish Air Force, mainly from the 4th and 8th Flotillas. The first mission was a raid on a Soviet airfield on January 12, 1940: three I-15bis fighters were destroyed on the ground, another was shot down in the air by Lieutenant Jacoby, who became the first Swedish pilot to win an aerial victory. Swedish pilots patrolled northern Finland, mainly intercepting unaccompanied Soviet bombers (SB-2, TB-3). Officially Sweden did not fight, but the Swedish Air Force participated indirectly. The air force grew a lot and in 1945 it had about 800 planes. One serious problem was the lack of fuel, as Sweden was surrounded by meandering countries and could not rely on imported oil. According to statistics, about 250 flight crew members were killed in the plane crashes of 1939-1945. Thus, the participation of the Swedish pilots in the Second World War was ambiguous: from secret volunteer participation in the Finnish campaign to serving in the Allied Air Force against a common enemy.