When assisting a traffic collision casualty suspected of having a spinal or cervical (neck) injury, what is the primary first-aid rule?

1. Quickly lift the casualty and seat them in your vehicle.
2. Do not move the casualty or twist their neck/spine unless there is immediate danger (e.g. fire or explosion); keep head, neck, and torso in neutral alignment.
3. Remove their motorcycle helmet forcefully by pulling it backward.
4. Encourage the casualty to stand up and walk around.