The first priority in any emergency situation is to ensure the safety of the public and first responders to prevent further injuries or casualties.
In a hazardous materials incident, the deputy should secure the area to prevent exposure and contamination, and then wait for the specialized HAZMAT team to handle the situation.
The primary role of the sheriff's department in a mass casualty event is to coordinate with other emergency services, such as medical responders and fire departments, and maintain order at the scene.
The deputy should establish a safe perimeter around the fire and assist with evacuating any occupants, leaving fire suppression to the fire department.
In an active shooter situation, the recommended protocol is for law enforcement officers to immediately confront and neutralize the shooter to prevent further harm to civilians and officers.