These incidents are important because this whole chapter is about the structure of the fire. Inside of informing the readers of the structure, Perry also tells the story of him and his brother trying to control the fire from the basement of this house. Even though Perry jokes about not needing much to become a fireman, in reality one needs a good amount of training. This training is where he learns how to control the fire. Eventually this training leads him to working with his younger brother in a basement to trying to control a fire.
Chapter 6
These events are the loop Perry runs to stay in shape. This 3.9 mile loop has much significance to Perry. There is a story for every section of his running route. Some significant person or incident happened at these key points. For example, it could be where he fought his first fire, or where he comes across the Amish. It may not be the longest running loop, but it has the most memories.