 Although an air raid alarm sounded in Schaffhausen, air raid sirens had been set off so many times without any attack that the locals felt safe, and many failed to take cover.A total of 40 people were killed and about 270 injured, and large parts of the town were destroyed.At the insistence of the Swiss government for an explanation, Allied investigations into the incident found that bad weather broke up the American formation over France, and that high winds that nearly doubled the ground speed of the bombers confused the navigators.