They could leave the boundary line to the regular patrol.

We don't keep regular patrols on the south bank, since there's really nothing there to watch for.

A regular patrol, or are they looking for us in particular?

These troops began regular patrols of the region both on the ground and in the air.

They had a direct line through to the local police station and we sent out regular patrols during the night.

I'd done three sorties during the fighting, after the six of regular patrol.

Not on this lighted street here - but we'll have the regular patrol watching there anyway.

Williams College security and the local police will also provide regular patrols.

Police have set up a regular patrol at a hospital in an effort to cut crime.

Assuming they were on a regular patrol, their route would be known.