BLUE BOOK 1: EXPANDABLE AIR-TUNNEL SLEEVE

The Expandable Air-Tunnel Sleeve is a lifesaving device designed for environments where human rescuers cannot safely enter narrow or unstable passages. Its purpose is to: create a breathable, supported, stabilized tunnel prevent collapse during rescue allow airflow to trapped victims expand without force that could harm the victim or shift the cave structure This is the first system humanity has ever conceptualized specifically for micro-scale cave geometry and collapsed infrastructure voids. Not demolition.Not extraction by force.Just safe passage creation.