SPARKGAP alerts first responders and then keeps incident commanders up-to-date regarding who is responding and when they will arrive. The system encrypts sensitive messages for operational security, and it delivers high-priority messages in approximately 4 seconds. SPARKGAP is a highly redundant, dedicated system, and pager batteries last 1-2 weeks between recharging. So the system stays operational, responders stay in communication, and agencies remain ready even during prolonged regional disaster scenarios such as hurricanes, earthquakes, and blackouts.