AEMT: All EMT skills plus IV access. May use SGA devices.
PARAMEDIC: Endotracheal intubation (ETI). Surgical airway (cricothyrotomy) if failed airway. RSI if authorized. Waveform capnography MANDATORY for all advanced airways. Confirm with ETCO2 + auscultation. If SpO2 doesn't improve with BVM → advance to next airway level. Max 3 ETI attempts → surgical airway.