A professional who patrols assigned territory to protect persons or property. Respnsibilities include:

• Tours buildings and property of clients, examining doors, windows, and gates to assure they are secured.
• Inspects premises for such irregularities as signs of intrusion and interruption of utility service.
• Inspects burglar alarm and fire extinguisher sprinkler systems to ascertain they are set to operate.
• Stands guard during counting of daily cash receipts.
• Answers alarms and investigates disturbances.
• Apprehends unauthorized persons.
• Writes reports of irregularities.
• May call headquarters at regular intervals, using telephone or portable radio transmitter.
• May be armed with pistol and be uniformed.
• May check workers' packages and vehicles entering and leaving premises.