What life-threatening condition must be managed first in care under fire?

Severe hemorrhage must be managed first in care under fire because it is the most immediate and life-threatening condition that can result in rapid death if not addressed. In a combat situation, the risk of significant blood loss is high due to the nature of injuries sustained, and without timely management, a casualty can succumb to exsanguination quickly. Effective control of severe bleeding, such as applying a tourniquet or direct pressure, prioritizes stabilization and increases the chances of survival during critical moments before further medical treatment can be provided.

While airway obstruction, chest injuries, and cardiac arrest are also serious conditions that require attention, their management can often come after severe hemorrhage has been controlled. The principle of 'prioritizing care' in tactical situations emphasizes that addressing the most dire threat to life takes precedence to maximize the potential for survival, which solidifies severe hemorrhage as the foremost concern in care under fire scenarios.