OK, after making sure everything is OK, I would go around seeing if anyone needs help. I am not a skilled guy like paramedic for example, but I know a few bits about safety and would help others who need help especially the elderly or children. This is when a bit of knowledge about psychology is very helpful. If I judge someone as a jerk for example, I will try to steer away and not try to "help" them because that can end up with very negative results.