Tuesday marked the last day of the Hajj , the annual pilgrimage that draws over two million Muslim pilgrims . ( CNN ) This year there were 180 ambulances , 22,000 health care workers and 19,000 units of blood on hand . To guard against the threat of terrorism , officials installed thousands of CCTV cameras throughout Saudi Arabia .
Tuesday marked the last day of the Hajj , the annual pilgrimage that draws over two million Muslim pilgrims . This year there were 180 ambulances , 22,000 health care workers and 19,000 units of blood on hand . To guard against the threat of terrorism , officials installed thousands of CCTV cameras throughout Saudi Arabia .