Whenever, in the judgment of the mayor or in the event of his inability to act, the vice-mayor, or in the event of inability to act, the police commissioner, or in the event of his inability to act, any councilman, or in the event of his inability to act, the chief of police and thereafter any elected or appointed city official available to act, determines that an emergency exists as a result of mob action, civil disobedience, war, invasion, rebellion, riot or natural disaster causing danger or injury to or damages to persons or property, he shall have power to impose by proclamation any or all of the following regulations necessary to preserve the peace and order of the city:
A. To impose a curfew upon all or any portion of the city thereby requiring all persons in such designated curfew areas to forthwith remove themselves from the public streets, alleys, parks or other public places; provided, however, that physicians, nurses and ambulance operators performing medical services, utility personnel maintaining essential public vices, firemen, and city authorized or requested law enforcement officers and personnel may be exempted from such curfew;
B. To order the closing of any business establishments anywhere within the city for the period of the emergency, such business to include, but not limited to, those selling intoxicating liquors, cereal malt beverages, gasoline, or firearms;
C. To designate any public street, thoroughfare, or vehicle parking areas closed to motor vehicles and pedestrian traffic;
D. To call upon regular and auxiliary law enforcement agencies and organizations within or without the city to assist in preserving and keeping the peace within the city.
(Ord. 240 § 1, 1970).