1.   A customs officer came round with a dog to sniff out drugs.

2.   After a short discussion with the customs officers, the gates opened and the truck moved off.

3.   All bags must be inspected by customs officers.

4.   Customs officers found a gun concealed about his person.

5.   Customs officers found a kilogram of cocaine that Smith had concealed inside his suitcase.

6.   Customs officers make random spot checks.

7.   Customs officers use specially trained dogs for drug searches.

8.   Customs officers use specially trained dogs to search for drugs.