The City of Pottsboro, Texas, acting by and through its mayor, mayor pro-tem or in the absence or inability to act, the city council or in case of absence or inability to act, the chief of police, may send or direct any of its regularly employed law enforcement officers to assist any other county or municipality, when a request is received for assistance from the mayor, or other officer authorized to declare a state of civil emergency, in such other municipality or county, representing that there exists in such other county or municipality a need for additional law enforcement officers to protect health, life, and property of such other county or municipality or its inhabitants, and the visitors thereof, by reason of riot, unlawful assembly characterized by the uses of force and violence, or threat by three (3) or more persons acting together or without lawful authority, or during the time of natural or manmade calamity.
(1996 Code of Ordinances, Chapter 8, Article 4.00, Section 4.02)