Thin Blue Line
Essentially there are three meanings. The Thin Blue line represents the thin line Police Officers walk daily between life and death. The Thin Blue line represents the police officer role of separating the good from the bad while creating order from chaos. The Thin Blue line on black is a memorial or a connection or memory between Officers killed in the line of Duty and those who continue with their duties in the present.
Thin Red Line
As firefighters are periled, they place their lives second to those they protect. They are forced to face their own fears and grasp for every ounce of courage to perform the necessary task. “The Thin Red Line of Courage” represents the last ounce of courage firefighters find deep in their blood to conquer their darkest fears in order to save and protect life and property. It is displayed to show respect for firefighters injured and killed in the line of duty.