The professionals light their fireworks by remote control.
When I was a kid, I read a book called “Follow My Leader,” about a boy who was permanently blinded by a firecracker, and how he had to adjust to life as a sightless person. It made quite an impression on me.
Also, a neighbor kid blew off his hand and lost and eye when he was fooling around with a homemade bomb. He had to live with a fake hand and a glass eye the rest of his life.
I loved “Follow My Leader”. If I remember correctly, the boy got his sight back and had to return the seeing eye dog, Leader. A real tear-jerker.