According to the definition of the Ministère de la Santé et des Services sociaux du Québec, a first responder:
Provides emergency services and stabilization to a person whose condition requires care, in accordance with clinical intervention protocols at a recognized level of training.
He/She works together with the ambulance paramedics. The first responder applies treatment protocols to prevent deterioration of the condition of the person in distress and transfers responsibility for care to the ambulance paramedics when they arrive at the scene.
In Hudson, fire fighters fill the role of first responders and help reduce the number of fatalities.