Upon arrival to a fire scene, a fire investigator must immediately assess the situation and begin a systematic and deliberate investigation – particularly if there is a possibility that the fire was intentional. If an arson case is to have any chance of being successfully prosecuted down the road, every “i” must be dotted and every “t” crossed during the investigation. When arson is suspected, the investigator is ultimately responsible for identifying and collecting evidence to support proof of incendiarism, proof of opportunity, proof of motive and connecting the evidence.