There were many safety rules that the boys broke in this novel. They were trying to set off rockets, so there were many explosions including blowing up his mom's fence. They also used alcohol to "fuel" the rockets, but it just would explode. They could not control the rockets, so they were often flying off towards people, putting them in danger. They were playing with fire/open flames throughout the novel as they were trying to figure out how to get the rockets to fly.
