In a three-tiered system, which entities are involved?

In a three-tiered system, which entities are involved?

• A. Fire
• B. EMS
• C. Private Transport
• D. Fire, EMS, and Private Transport

Answer: (D)

In a three-tiered system, three distinct roles work together: the fire service handles scene safety, stabilization, and the extrication itself; EMS provides on-scene medical assessment and treatment to stabilize the patient; private transport takes the patient to a care facility when EMS transport is used or when specialized transfer is needed. This combination ensures hazards are controlled, medical care starts promptly, and patients are moved to the hospital efficiently. Leaving out any one of these pieces would leave a gap in the rescue and care chain—without fire, hazards and extrication may be unsafe or slow; without EMS, patients may lack necessary on-site care; without private transport, getting to the hospital could be delayed. Therefore, all three are involved: fire, EMS, and private transport.