1.   A Boston College police officer had been dispatched to guard the door.

2.   Police were dispatched to guard against possible violence.

3.   Thousands of police were dispatched to guard against possible violence.

4.   Thousands of riot police were dispatched to guard against violence.

5.   Thousands of police were dispatched to guard against possible violence, but no problems were reported.

6.   The soldiers had been dispatched to guard an oil pipeline belonging to the Empresa Colombiana de Petroleos near the town of Orito, not far from Ecuador.