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In an apneic patient with a pulse, the AEMT should provide assisted ventilation with a bag-valve mask (BVM) attached to oxygen, delivering 1 breath every 5–6 seconds (about 10–12/min) with just enough volume to see visible chest rise. Excessive tidal volumes or rates (A) risk gastric insufflation, aspiration, and barotrauma, and can worsen hemodynamics. CPAP (C) is for spontaneously breathing patients with adequate mental status and ventilation effort; it is contraindicated in apnea. Two quick breaths (D) are inadequate and omit ongoing ventilation. Concurrently, prepare and administer naloxone per protocol if opioid toxicity is suspected, but do not delay ventilation while waiting for medication effect. Effective BVM requires a tight mask seal (two-person technique preferred), appropriate airway adjuncts, continuous pulse oximetry if available, and frequent reassessment of chest rise, breath sounds, and mental status. If ventilation remains difficult, re-position the airway, consider suctioning, and escalate to supraglottic airway placement if within scope and indicated.