Awwal 25, 1432, Feb 28, 2011, SPA-- Prince Dr. Abdulaziz Ibn Mohammed Ibn Ayyaf Al Muqrin, the Mayor of Riyadh Province, will inaugurate here on Tuesday the events marking Civil Defense World Day entitled "Family Role in Civil Defense". In a statement on this occasion, the Director of Civil Defense Directorate in Riyadh Major General Abed bin Matar Al-Sukhairi has expressed his thanks to and appreciation of Prince Salman Ibn Abdulaziz, the Governor of Riyadh Province and Prince Sattam Ibn Abdulaziz, Vice Governor of Riyadh Province, for their unlimited support for the Civil Defense Directorate in Riyadh Province.