DefenX is an end-to-end protection flow built around four phases — Detect, Engage, Facilitate, Extend — that carries a school from the first sign of a threat through full recovery. It identifies concealed firearms in milliseconds, verifies with a human before alerting, then delivers role-specific instructions and silent two-way communication to teachers, staff, and SROs. After the crisis, an AI chatbot reconstructs the incident timeline and flags protocol gaps so schools can learn and heal.