1.   Indeed, feeding can be especially treacherous here because of overgrazing at restaurants on Main Street, where sport utility vehicles circle like jackals for parking spaces.

2.   It means playing pickup games while law enforcement vehicles often circle the courts in search of drug trafficking.

3.   Marchers ran in confusion and police emergency vehicles circled, their sirens blaring.

4.   Marchers ran in confusion and, police emergency vehicles circled, their sirens blaring.

5.   Police vehicles circled the area, but security forces kept well away.