Finnish air defense forces counted 2,121 bombers in the three raids of February 1944, which dropped more than 16,000 bombs. Of the 34,200 shots fired against the bombers, 21,200 were with heavy AA artillery, and 12,900 were with light AA artillery. The Finns deceived Soviet pathfinders by lighting fires on the islands outside the city, and only using the searchlights east of the city, thereby leading the pathfinders to believe that it was the city. Only 530 bombs fell within the city itself. The majority of the population of Helsinki had left the city, and the casualties were low compared to other cities bombed during the war.