Communication within an airport is critically important for travelers and personnel alike. Airports are hectic places with people rushing about. Some are trying to find their gate while others are searching for a place to grab a bite while they wait for their flight to board. Some are behind schedule and at risk of missing their flight while others have plenty of time on their hands. Every message played over the PA system must reach everyone in the airport. A weather event can set off a chain reaction of delays and cancellations that can affect everyone in the airport. Someone.