Any person present at any fire shall be subject to the orders of the Fire Chief in extinguishing that fire, or in aiding to save property from destruction or injury, and that person shall obey all orders given him by that officer. No person shall willfully offer any hinderance to any officer or firefighter, in the performance of his duties at or going to any fire. All bystanders at any fire who are not employed or whose assistance is useless shall remove to or remain at a distance from the fire as ordered by the Fire Chief.
('71 Code, § 155.14) Penalty, see § 10.99