Hajj security 麦加朝圣保安措施
They have a tough mission ahead.
Thousands of members of the Saudi security forces have been taking part in a parade ahead of the world's biggest religious gathering.
The Hajj involves over 2 million Muslim pilgrims. It's a ritual that's designed to promote Islamic brotherhood.
With tensions simmering in the region, particularly in Lebanon and Syria, the logistics are even more complicated than usual.