That's a pretty sweet looking display there! Wish I could compare with my own, but those are a little beyond my means (and non-existent ATF license, haha).
Anyway, I was watchin the display off the USS Yorktown in Charleston, SC. Usually I'm back in PA setting off my own, but my fiancee is working down in SC now, so I went down there since I had a week off.
Of course I blew many things up, caught some fish, and ate some BBQ. Then I watched the city fireworks show, and shined my 800mw 445 at the smoke... My sister saw it from three miles away. She said all the kids around her were asking their parents what the purple light was! lol She also said you could see the beam going back to where I was. Oops lol. Then a low powered greenie started following mine. Seeing 800mw light a cloud of smoke bright purple/blue from a mile away made my day!