https://www.nytimes.com/1997/06/07/us/fireworks-explosion-saddens-a-tennessee-town.html
Had a fireworks factory blow up in a town nearby in 1997
...those not far from the explosion were entranced by the unexpected beauty of it, as what seemed like thousands of rockets exploded in the air.
...’’It was the most elaborate fireworks I’ve ever seen,’’ said Bill Slone, who was standing outside the golf cart business he runs. ‘’Then it wasn’t beautiful anymore.’’
Did they ever find out what caused that?