The patient was practically comatose by the time you arrived on scene. A gastric cancer patient, he had lost his ability to effectively swallow and had regurgitated once he arrived home from his chemotherapy treatment. As your partner flips open the airway bag, you attach the monitor and note a bradycardic rate of fifty-four. You set up for an IV while your partner cranks on the O2, only to realize the tank is empty. He dashes out to the truck for a replacement while you attempt the IV. Valuable seconds tick by. The patient is breathing on his own, yet gasping, and you fail to notice the remnants of vomit and bile rimming his mouth. With each passing minute, he inhales more of the acidic stomach contents lodged in his airway. His prognosis is quickly devolving.