Answer:

policed

Answer	Crossword Clue
POLICED	Served as a security force for
POLICED	Monitored
POLICED	Patrolled.

POLICED	Maintained law and order in.
POLICED	Guarded.
POLICED	Kept the peace.
POLICED	Maintained order
POLICED	Patrolled a beat
POLICED	Patrolled the highway
POLICED	Provided protection for
POLICED	Controlled

POLICED	Maintained order over