If an accident victim is suspected of having a spinal or neck injury, what is the correct first-aid action?

1. Help the victim sit up and walk to the side of the road to clear traffic
2. Do not move the victim; stabilize the head and neck in the position found and wait for trained emergency medical personnel
3. Roll the victim onto their stomach to prevent choking on vomit
4. Remove the victim's helmet immediately to check for head wounds