A couple of times I was still down range when idiots started shooting from the firing line. I could hear the rounds impacting nearby. My left ear is going bad because some once started shooting before I was back to the the line. Then there was the time in my kitchen when I hear the hypersonic crack of 3 rounds over the house followed by the distant boom-boom-boom of the rifle. Had everyone hit the deck until it seemed clear. This was in the city. I meant to check the roof for damage, but never got around to it.
I did go through an exercise once where we were placed forward of the firing line as someone shot past us to give us the experience of close quarters live fire.
If BB guns do count, I've been in my share of BB gun wars, notibly due to some neighbor kids. Learned a lot about tactics and trajectories.