Which of the following is NOT one of the four life-saving steps in American military first aid?

The four life-saving steps in American military first aid focus on immediate actions that can be taken to preserve life in critical situations. These steps include clearing the airway, controlling bleeding, and treating for shock, all of which address the most urgent physiological needs of a casualty.

Administering medication is not considered one of the life-saving steps in this context, as it typically requires a more comprehensive understanding of the patient's condition and can involve specific protocols and training beyond the immediate first aid necessary in life-threatening scenarios. In training and practice, addressing life-threatening issues such as maintaining an open airway, stopping severe bleeding, and addressing shock takes precedence over medication administration, which may not be necessary or appropriate in every situation. Thus, recognizing that administering medication does not fit within this critical framework helps clarify its exclusion from the list of essential life-saving steps.