If an unexploded shell lands near you, run away and notify security. You never know what a dud will do. Stay behind the safety barriers and remember, the best way to view the fireworks is from a quarter mile away. Please leave your personal fireworks at home, these can become a hazard in a large group of people. If you are planning your own backyard celebration, and you have small children, please be aware of where your children are in relation to the fireworks.
Most people injured in firework mishaps are bystanders.
Sparklers are not always as safe as you might think they are, they burn at 2,000 degrees Fahrenheit and can cause eye damage and burns. There are a variety of tips for everyone to follow when celebrating the 4th of July. Some of them actually surprised me. Always have water handy, like a bucket or garden hose. Dispose of fireworks properly by soaking them in water and then disposing of them in your trashcan.