The police dog helped track down the suspect.

The police magistrate presided over the trial.

Living in a police state means that the secret police suppress the actions of citizens.

I heard some interesting conversations on the police scanner last night.

The riot police were called in to control the violent protest.

The air police are responsible for maintaining security on military air bases.

The policeman arrested the thief.

Be careful when driving over the sleeping policeman.

The military policeman arrested the suspect.