Emergencies, by their nature, are unexpected. When a hurricane hits, a fire breaks out, an earthquake happens, a shooting takes place or any other catastrophe occurs, every second counts when undertaking an effective response. Network-centric emergency mass notification technology plays a significant role in protecting people affected by unforeseen events and helping them to respond to their respective crises. In 2010, these IP-based mass notification systems were used during a number of real-world events such as the shootings at Fort Bliss and the University of Texas–Austin campus. These events have clearly demonstrated that emergency mass notification systems have worked as…