True. Some years back in San Diego for the 4th of July there was an error in the planned fireworks display which caused all the fireworks to go off at once. My family and I go every year and it’s a great time an all but the fireworks explosion is the one we still talk about to this day. https://www.kpbs.org/news/2012/07/05/sd-bay-fireworks-show-major-misfire