Please respond to Zachory
The department I used to work for had 3 fire investigators, The Fire Marshall, The Department Chief, and the Assistant Chief. They would regularly keep a list of those memebers that were or showed interest in becoming fire investigators. When investigations would arrise they would take a few of the interested ones with them to show them from start to finish how they conduct investigations, things to look for and also to give the investigators a hand if needed. A few times a year they would get an abandoned house that we would burn down for training so they would start a fire and we would put out the fire, and then they would take all of us through in groups to show us the key things to look for especially if it is suspected arson so we would know what areas to help protect to they could fully investigate.