Heavily armed anti-riot police are poised to carry out an anti-terrorism drill aimed at mass events in Yili, northwest China's Xinjiang Autonomous Region, January 29, 2007.

Heavily armed soldiers are poised to carry out the anti-terrorism drill.

Armed soldiers provide aid to anti-riot policemen.

Anti-riot policemen launch an ambush.

Anti-riot policemen respond to an emergency call.

(China Daily January 31, 2007)