What type of incidents must be reported to the RTO as soon as possible?

The correct answer is that births must be reported to the RTO as soon as possible. In the context of emergency services and firefighting, specific incidents require immediate reporting due to regulatory and legal obligations. Births, especially those occurring in non-medical settings, fall under this category because they may require further assistance from medical personnel, resources, or documentation for health department protocols.

Reporting births promptly ensures that proper medical care can be provided to both the mother and the newborn. It also initiates the necessary follow-up to ensure the safety and health of both parties involved. In contrast, while accidental injuries, training accidents, and public events might also warrant reporting, they do not typically carry the same immediacy or specific reporting requirements to regulatory bodies like births do. Thus, the urgency surrounding birth reporting sets it apart from the other types of incidents listed.