Every person present at the scene of a fire shall be subject and obedient to the orders of firemen and police officers in all matters relating to extinguishing the fire, removal and protection of persons and property endangered by fire, smoke or water, freedom of Fire Department and medical personnel and equipment to perform their duties or to function properly, and the maintenance of order at or near the scene of the fire, and it shall be unlawful for any person to disobey any such order of a fireman or police officer. Firemen and police officers shall have authority to arrest persons who disobey such orders and to hold them in custody until the fire has been extinguished, at which time the violators shall be dealt with according to law.
('73 Code, § 9-13) Penalty, see § 10.99