As we were waiting for the Parker fireworks show to start, sitting at the northernmost ballfield at Salisbury Park, I saw a few that appeared to be set off from a nearby backyard barely leave the ground before exploding. I commented to the wife that there was bound to be a fire at some point. Shortly after, we saw the light of a fire in a grove of trees.
Some event attendees or staff jumped over the barriers and they, or someone from a nearby residence, managed to put it out.
So there is some dumfuckery going on with some of the revelers.
The red/blue lights could be seen shortly after through the still present smoke.