The nightclub was packed when you pulled up front. The bouncers were waving frantically from just beyond the entrance as they stood over an unconscious male who was sprawled on the sidewalk. You and your partner grab the usual equipment: the airway bag, monitor, drug box, and portable suction unit. And it’s a good thing you included the suction. When you approach the patient, he’s unresponsive, frothing at the mouth, and barely moving any air.