Today, I learned about Operation Bongo, where a city in the United States suffered a "bombardment" of sonic booms eight times a day for half a year to see how many booms the population is prepared to suffer before it goes crazy.
The experiment took place in 1964 in Oklahoma City. There was only one day without booms: Easter Day.
The results of the experiment: It turns out that a trembling noise every two hours is not something you can get used to. After no less than 15,000 official complaints from the residents, the experiment was halted - along with the plan to develop sonic airplanes.
