public void initAirports() {
try {
airportXML = new AirportXML(airportData, XMLMapAccess.GenerateDocument(airportData));
airports = (HashMap<String, IAirport>) airportXML.getAirports();
setChanged();
notifyObservers(new AirportEvent());
} catch (IOException ex) {
Logger.getLogger(ATMCModel.class.getName()).log(Level.SEVERE, null, ex);
}
}