In this subtitle the following words have the meanings indicated. “Board” means the Statewide Interoperability Radio Control Board. “System” means the Statewide Public Safety Interoperability Radio System, also known as Maryland First (first responder interoperable radio system team), that provides interoperable radio communications to first responders in the State. “User” means a State, federal, county, or municipal agency that has established interoperability with the System and operates on the System as its primary means of daily radio communication.