Lychakiv Cemetery Sirens

Air raid sirens recorded in Lychakiv Polish Cemetery in Lviv, Ukraine in June 2017. I'm not sure where the sirens were coming from, I thought that it being during the afternoon, they might be factory sirens, there seem to be three of them. It was very quite in that part of the cemetery on that day, and I met a soldier looking for the grave of his commanding officer shortly afterwards.