Polish and NATO aviation assets were activated over Poland at approximately 3:03 PM UTC on September 13th in response to a potential drone threat in western Ukraine, according to the operational command of the Polish Armed Forces. Lublin Airport, situated in eastern Poland, was closed due to "unplanned military activity related to ensuring state security," as confirmed by a Notice to Airmen (NOTAM). This activation follows reports of a drone or aircraft, identified as "Gerbera," operating over Romania, with another reported in the Volyn region of Ukraine moving westward. Polish media also reported that Poland's ground air defense systems have reached their highest state of combat readiness in connection with the perceived threat. The operational command of the Polish Armed Forces stated that fighters of Poland and NATO were launched into the sky over the republic due to the threat of UAVs in western Ukraine. Earlier today, within the current reporting window, the Air Force of Ukraine reported aerial activity, including a "Bil" (likely a drone or aircraft) in the Volyn region moving westward and another in the north of Poltava region, also moving west. These advisories suggest ongoing aerial operations in the region. Separately, a tennis match concluded with Kamil serving an ace, leading Poland to a 3-0 victory against Romania. Lublin Airport had previously been closed to all aviation operations at approximately 2:32 PM UTC on September 13th due to "unplanned military activity related to ensuring state security," as stated by the Polish Air Navigation Services Agency (PANSA). Flights scheduled for Lublin were being rerouted to Warsaw Chopin Airport. Polish media outlet TVN24 reported that military aviation operations began in response to the threat of drone impacts in Ukrainian regions bordering Poland.