Whoever or whatever he was, just a ridiculous tragedy. This is one of the reasons I started carrying a couple of years ago. Had an incident on a job with someone who was definitely nuts. He began trying to stab people walking on the sidewalk, then went after a road crew. Started to charge at me while I was on a ladder, thought it was about to go down to a life or death struggle, all I had at the time was a hammer in my truck tool box, he stopped about 3 steps away and went after another guy walking in the yard just behind me. I promised myself then that I would never be in that situation again.