At FDIC International 2026, our panel of EMS providers and critical‑care physicians break down ventilation during cardiac arrest: what the science supports, where practice still fails, and practical fixes you can use tomorrow. We cover why bag‑valve‑mask ventilation is a high‑risk skill (and best performed as a two‑person procedure), how over‑ and under‑ventilation change intrathoracic pressure and cardiac output, and why properly opening the airway and achieving a seal are fundamental. We discuss supraglottic airways, intubation pitfalls, CPAP and high‑flow strategies, the pros and cons of mechanical ventilators in the field, and the role of objective feedback devices. The panel emphasizes regular, low‑cost simulation training, equipment readiness, pit‑crew coordination, and the hard truth: patients die from poor ventilation more often than from the absence of intubation.