public Airspace createAirspace(WorldWindow wwd, boolean fitShapeToViewport) {
      SphereAirspace sphere = new SphereAirspace();
      sphere.setAttributes(getDefaultAttributes());
      sphere.setValue(AVKey.DISPLAY_NAME, getNextName(toString()));
      sphere.setAltitude(0.0);
      sphere.setTerrainConforming(true);
      this.initializeSphere(wwd, sphere, fitShapeToViewport);

      return sphere;
    }