21.   Dozens of heavily-armed soldiers patrolled the perimeter of the fortified American compound in Karachi on Saturday.

22.   Extra guards patrolled the perimeter of the U.S. Embassy compound, and the mission was closed to visitors.

23.   Foreign reporters and diplomats were barred from the court building by scores of police who patrolled the perimeter in heavy fog and a steady snowfall.

24.   Guards with machine guns patrolled the perimeter of the embassy and extra Uzbek police were added to the security detail.

25.   Helicopters circled overhead and troops in black ski masks patrolled the perimeter.

26.   Sentries patrolled the perimeter.

27.   South Korean organizers set up metal detectors at every entrance and armed police special forces patrolled the perimeter with dogs during the event.

28.   The soldiers patrolled the perimeter of the camps, carrying assault weapons and rocket-propelled grenades.

29.   Two large navy ships patrolled the perimeter of the restricted area to keep boats out.

30.   Hundreds of extra guards have been deployed to patrol its perimeters.