The main idea of the "Lifeguard Training" section is

Lifeguards at pools, beaches, lakes and other aquatic facilities must be trained to respond to injuries, potential cases of drowning and other medical emergencies. They must also maintain order and enforce safety rules, and they may be responsible for assisting and instructing guests regarding these rules. The main roles of a lifeguard are to prevent accidents and spot potential trouble/hazards before they become life-threatening, and responding to emergencies when needed. They also educate the public about the risks associated with aquatic activities and how to be Water Smart

It you understand the origins