The duties of a fire police officer, subject to the supervision of the fire officer in charge, are to:
(1) Protect the contents of buildings and all other property affected by any fire or fire drill;
(2) Establish and maintain fire lines;
(3) Perform such traffic duties as are necessary;
(4) Wear a fire police badge, to be designed and authorized by the Delaware Volunteer Firefighter’s Association, on the left breast of the outermost garment while on duty.