Seven minutes past midnight on March 10, 1945, nearly 300 American B-29s thundered into the skies over Tokyo. Their payloads of incendiaries ignited a firestorm that reached up to 2,800 degrees, liquefying asphalt and vaporizing thousands; sixteen square miles of the city were flattened and more than 100,000 men, women, and children were killed. Black Snow is the story of this devastating operation.