At Kentucky Jets this year I was helping a flying buddy on the start up line. While we were starting up (had his extinguisher right there with us), another jet had a hot start. We didn't realize what happened since we were focused on getting his jet started. The guy did not have an extinguisher so he ran over and grabbed my friends extinguisher and put his engine fire out. Now don't get me wrong, I would have run over there myself and handed him the extinguisher if I'd had seen what was going on cause no one wants to see another guys jet burn up. Just an example that things happen very quickly when there is an emergency. Sometimes we get complacent. I was also on the flight line last year at Florida Jets during the crash which is another example of how quickly things can go wrong. As a CD it's next to impossible to monitor everyone coming onto the flight line for safety equipment, especially at a big event. We have to take personal responsibility.