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I really appreciate the incredible amount of time you've devoted to this AMA, including the pictures. Very thorough. Enjoy your gold.

What advice would you give to anyone attending a public event like this in the future?

Did you see anyone that was injured from the gunfire?

In one of the videos posted to YouTube, I noticed one man yelling "It's just fireworks! Stop! It's just fireworks!" I sure know now to never listen to anyone who thinks they know what they're talking about. I'm sure that man has a guilty conscience right now.

Another thing to point out... if the ammo he was using is rated for over 1,125 feet per second (FPS) then those bullets are travelling faster than the speed of sound. If that's the case then when you hear the gun fire, the bullet has already reached it's destination. Those "snaps/cracks" you hear in the air are 'likely' little sonic booms.

Here's a great 5 minute animated video on YouTube that can explain a sonic boom to a 5-year-old: The sonic boom problem - Katerina Kaouri

Another video showing and explaining supersonic "cracks" from bullets Supersonic Bullets & Crack!?