1.   But while I was ready for dress-code inspection, I was taken by surprise by the bomb sniffing dogs.

2.   They also trust cadaver- sniffing dogs named Bear, Caleb and Bonnie.

3.   Police used sniffing dogs to try to find other explosives in the area.

4.   Security for the closing ceremony was tight, with thousands of police and soldiers, some with bomb sniffing dogs, on patrol.

5.   Truck-mounted machine guns were positioned around the hall, as were sniffing dogs.

6.   Police have set up checkpoints and dispatched bomb sniffing dogs to prevent against further explosions.