Final answer:
In case an individual is thrown from a vehicle and is choking, first encourage them to cough, then use hard back slaps, and if necessary, perform the Heimlich maneuver. For an unconscious person, especially with potential spinal injuries, stabilize the head and neck and call emergency services.
Step-by-step explanation:
In emergency situations where an individual is thrown from a vehicle, it is crucial to ensure that their airway is open to prevent oxygen deprivation. If the person is conscious and choking, encourage them to cough to dislodge any obstruction. If coughing does not work, deliver hard back slaps to help force the lodged object from their airway. Only trained professionals should attempt procedures like intubation. If you suspect a spinal injury as was the case with Christopher Reeve's accident, it is important to stabilize the individual's head and neck without moving them until emergency services arrive. The goal is always to ensure the person can be safely treated for any obstructions or injuries and to enable normal breathing as quickly as possible.