When the Chernobyl reactor in the Ukraine melted down, an entire reactor with virtually no containment system exploded, spewing huge amounts of radioactive material into the air, where they were blownbythewind into habitable areas.
He flies to the next town over and perches in all the trees, then falls to the ground in several different countries and is blown away bythewind, which hammers endlessly in all the ears he has more than he is capable of counting.