Usage Usage refers to how often interoperable communications technologies are used. Success in this element is contingent upon progress and interplay among the other four elements on the Interoperability Continuum. Planned Events—Events for which the date and time are known (e.g., athletic events and large conferences/conventions that involve multiple responding agencies). Localized Emergency Incidents—Emergency events that involve multiple intra-jurisdictional responding agencies (e.g., a vehicle collision on an interstate highway). Regional Incident Management—Routine coordination of responses across a region that include automatic aid fire response as well as response to natural and man-made disasters. Daily Use Throughout Region—Interoperability systems are used every day for managing routine as well as emergency incidents. In this optimal solution, users are familiar with the operation of the system(s) and routinely work in concert with one another.