I am uploading a short video of a bamboo burn I did at our boo pile about 5 years ago. The fire department showed up at my site...someone had called in a lot of noise and they could see smoke. I was surprised the cops the didn't show up...it does sound like a firefight. Big pieces can sound like a grenade. I have seen fire, coals, etc. blown 15-20 feet away from fire...it can get dangerous. I"ll post up the video in a bit.