def METHOD_NAME(self):
    '''check and handle threat time out'''
    for id in self.threat_vehicles:
        if self.threat_vehicles[id].update_time == 0:
            self.threat_vehicles[id].update_time = self.get_time()
        dt = self.get_time() - self.threat_vehicles[id].update_time
        if dt > self.AIS_settings.timeout:
            # if the threat has timed out...
            del self.threat_vehicles[id]  # remove the threat from the dict
            for mp in self.module_matching('map*'):
                # remove the threat from the map
                mp.map.remove_object(id)
                mp.map.remove_object(id+":circle")
            # we've modified the dict we're iterating over, so
            # we'll get any more timed-out threats next time we're
            # called:
            return