Prince Mohammed bin Naif bin Abdulaziz, Minister of Interior, patronized the graduation ceremony of 2508 individuals enrolled in a civil defense technical rehabilitation course held by the Directorate General of Civil Defense (DGCD) at Arafat area here this evening. Upon arrival, the Minister was received by Director General of Civil Defense, General Sa'ad bin Abdullah Al-Tuwaijri, and a number of senior civilian and military officials.