[Answered]: A 16-year-old boy is found unconscious next to a tree

A 16-year-old boy is found unconscious next to a tree. EMS arrives at the scene promptly and finds that the boy is unconscious and does not react to painful stimulation. His blood pressure is 70/30 mmHg, heart rate is 180 beats per minute, and oxygen saturation is at 82%. He has an obvious open left femur fracture in his mid-thigh, and there is active pulsatile bleeding from the wound. Which of the following interventions should be performed first?