How should a motorcycle helmet be handled if an injured motorcyclist is lying conscious on the ground with no airway obstruction after an accident?

1. Do not remove the helmet; keep the victim still and steady the head and neck in a neutral alignment until professional medical help arrives
2. Yank the helmet off immediately by pulling forcefully upward
3. Rotate the helmet 90 degrees to check for ear bleeding
4. Remove the helmet and place it under the victim's knees