What immediate action should be taken if a casualty is identified with life-threatening injuries?

When a casualty is identified with life-threatening injuries, the primary responsibility is to ensure that emergency services are contacted immediately. This is crucial because professional medical assistance is required as soon as possible for severe injuries that could be life-threatening, such as traumatic injuries, cardiac arrest, or significant blood loss. Promptly alerting emergency services initiates the necessary protocols to provide the injured individual with medical care, which may include advanced life support or surgical intervention that cannot be provided at the scene.

While ensuring the environment is safe is important for the safety of the rescuer and others, and performing first aid or resuscitation is vital in many situations, these actions should not come before contacting emergency services when life-threatening injuries are present. A thorough review of procedures is also important, but it is not an immediate action that addresses the urgent needs of the casualty. It's essential to prioritize contacting emergency services to secure timely professional help.