Actions taken while a law enforcement official is acting as a "community caretaker" are not subject to Fourth Amendment restrictions. When does the community caretaker role of such an official end and the law enforcement role begin? What happens if a firefighter enters to fight a chemical fire (community caretaker function) and it turns out that the fire was lit intentionally and is thus a commission of a criminal act - do Fourth Amendment protections begin applying in this scenario? If so, when and what kinds of evidence would not be subject to the exclusionary rule?