What is the only medical treatment performed during the Care Under Fire phase?

During the Care Under Fire phase, the only medical treatment that is generally performed is the application of hasty tourniquets. This phase occurs in a combat situation where there is ongoing enemy fire, and the priority is to provide immediate life-saving interventions while ensuring the safety of the medic and the casualty.

Hasty tourniquets are crucial because they are quick to apply and help control severe bleeding from a limb. The focus during this phase is primarily on managing hemorrhage as it poses the most immediate threat to life. Since the situation is dynamic and potentially dangerous, the medic must act efficiently and effectively, often with limited resources and time.

The other options—administering oxygen, wound dressing, and IV fluid administration—are important components of trauma care but are not feasible during the Care Under Fire phase. Administering oxygen and IV fluids require a secure environment and a more stable situation to ensure safe delivery and monitoring. Similarly, while wound dressing is essential, it cannot be effectively applied until the risk of further injury in a firefight is mitigated. Thus, hasty tourniquets are the only intervention performed during this critical phase.