Final answer:
The first responder to arrive at an incident must conduct a size-up, report conditions, and take appropriate action based on instructions. For example, if it is a fire emergency, they may search for and rescue victims, administer first aid, and wear appropriate protective equipment.
Step-by-step explanation:
When the first responder arrives at the scene of an incident, they have several responsibilities: Conduct a size-up: This involves assessing the situation, including identifying potential dangers and the immediate objective for the incident. Report conditions: Using two-way radios, the first responder must communicate the findings of their size-up to their superiors in order to receive instructions.
Take appropriate action: The first responder should follow the instructions given by their superiors and begin to address the incident. For example, if it is a fire emergency, they may search for and rescue victims, administer first aid, and wear appropriate protective equipment.