To limit the probability that emergency responders will not be able to communicate in an emergency situation, which could lead to delays or inefficiencies in carrying out emergency response operations, which could lead to delays in evacuation or moving to a safe place, which could lead to harm to persons.
To limit the probability that persons will not be properly instructed in an emergency situation, which could lead to inappropriate action by such persons, which could lead to delays in evacuation or moving to a safe place, which could lead to harm to persons.