If an accident causes an object (such as a piece of metal, glass, or wooden stake) to penetrate and remain impaled in a passenger's body (body impalement / 异物刺入), what is the vital first aid rule?

1. Do NOT remove or pull out the impaled object; stabilize and secure the object in place with bulky dressings and bandages to prevent movement, and transport immediately to a hospital
2. Pull the object out immediately with maximum force and discard it
3. Push the impaled object further through the body to make it come out the other side
4. Twist the impaled object in circles to check if internal organs are intact