Crown Prince Mohammed bin Naif bin Abdulaziz, Deputy Premier and Minister of Interior will patronize here on Wednesday the graduation ceremony of a new batch of the civil defense qualification course. The Director General of Civil Defense, Lieutenant General Sulaiman bin Abdullah Al-Amr, has expressed his thanks and appreciation to the Crown Prince for patronizing the ceremony which will give a great incentive for the Civil Defense to exert more efforts to achieve the leadership's aspirations.