I don’t know for sure that the fire by Via Letto wasn’t caused by fireworks, but I’m on the opposite side of Traverse mountain and there was a smaller fire that was started bc of the fireworks (the side of the mountain that overlooks I-15). It was maintained well by some homeowners and hoses until the fire trucks got there. Was put out very quickly. I’m pretty sure that the fireworks that were going off is coincidental to the huge fire that is raging on the other side of the mountain.