Which casualty should treat first?

In a mass casualty situation, the priority for treatment should be given to individuals who are critically injured but have the potential for survival if they receive immediate care. This typically includes those with airway obstructions, severe bleeding, or signs of shock. The triage system, often using colors like red for immediate treatment, helps responders identify who needs urgent care first. Always assess the situation based on the urgency of injuries and the likelihood of recovery with prompt intervention.