ARPyr Bros
Fireworks displays require a good bit of space. The safety standards require 70ft of clearance in every direction per inch of shell diameter. Typically, the smallest shells we use are 2.5" diameter which means you would need at least 175ft in all directions from a firing position to meet the requirements.
We use a combination of satellite imagery and in person measurements to create a site map for every show with safety setbacks clearly indicated.