TCCC is practiced by teams, not isolated clinicians. “What should be done” is inseparable from “who is trained and authorized to do it” and “what is physically available.”
Typical role layers
While specific labels vary by organization, a common layered structure is:
- Self-aid / buddy-aid - immediate actions by the casualty or nearest teammate.
- Designated trained non-medical responders - personnel trained to a defined tactical first aid scope.
- Medical personnel - medics or clinicians with expanded scope and equipment.
- Evacuation / receiving teams - personnel whose capability increases along the evacuation chain.
The purpose of defining layers is coordination: everyone knows what they are responsible for and what they should not attempt.
Typical kit categories
Rather than treating an IFAK as a list of branded items, it is useful to think in categories aligned with preventable death:
- Hemorrhage control
- Airway support
- Breathing / chest injury support
- Hypothermia prevention and packaging
- Documentation and marking
The best kit is one you can deploy under stress in the conditions you expect, and that matches your protocol.
Scope is a safety system
Scope of practice is not bureaucracy; it is a safety boundary. In tactical contexts, overreach can injure the casualty and the unit (time loss, distraction, degraded security). A disciplined scope:
- matches training and supervision
- matches logistics (resupply and evacuation reality)
- is rehearsed as part of unit procedure
See also: Training, Governance, and Ethics.