Which of the following is NOT a phase of TC3?

The correct answer is the phase labeled as emergency room care. Tactical Combat Casualty Care (TCCC) is structured around specific phases designed for managing casualties in a tactical environment, namely care under fire, tactical field care, and tactical evacuation care. Each of these phases addresses the unique challenges and logistical considerations faced in combat scenarios.

Care under fire is the initial phase, focusing on protecting oneself and the casualty while performing critical interventions. Following this is tactical field care, which occurs once the threat is neutralized, allowing for a more thorough assessment and treatment of injuries without the immediate threat of combat. Tactical evacuation care is provided when the casualty is being moved to a safer location or medical facility, ensuring continuous care during transit.

In contrast, emergency room care typically refers to the standard medical care provided in a hospital setting after the casualty has been removed from the immediate dangers of the battlefield. This phase is not a part of TCCC because it does not pertain to the tactical environment and the principles guiding combat casualty care. The distinction is vital for understanding how medical treatment is managed under the constraints and realities faced in a deployed situation.