In this EM Cases CritCases blog - a collaboration with STARS Air Ambulance Service, Mike Betzner, we present a challenging airway obstruction case, the limitations of non-rebreather masks, using PEEP on bag-valve-masks, heliox, tips on awake intubation, and the differential for high peak inspiratory pressures in the post intubation period. With commentary by Michael Betzner and Reuben Strayer as well as expert peer review by George Kovacs...