On the 8th of October HFC has conducted the second full scale exercise within the scope of the project ensure in cooperation with the project partners. More than 100 voluntary citizens, pretended injured actors of the DLRG, and professional rescue forces of the Berlin fire brigade and the German Red Cross have practiced such a thunderstorm scenario. Therein, the cooperation of engaged citizens and professional rescue forces was tested. In addition, more than 50 guests from the home and abroad took part to discuss together the new approach for the integration of spontaneous helpers.