Here's some firework pictures I took of the 20th Anniversary celebration at the Wildhorse Casino near Pendleton, Oregon. I was probably within about 600 feet of the action so some of the explosions were nearly overhead. As an experiment, I reversed a 1-stop gradient neutral density filter (i.e., dark on the bottom) to deal with the brighter action near the surface. It wasn't quite enough so next year I'm going to go with a 2-stop filter.
Thanks for looking,