Texas Government Code - GOV'T § 433.004. Duties of Law Enforcement Agency

(a) During a state of emergency, each law enforcement agency in the state shall cooperate in the manner the governor or the governor's designated representative requests and shall allow the use of the agency's equipment and facilities as the governor or the governor's designated representative requires, except that if the agency is not located within the affected area, the use may not substantially interfere with the normal duties of the agency.

(b) A county or municipal law enforcement agency shall notify the director of the Department of Public Safety if the agency receives notice of a threatened or actual disturbance indicating the possibility of serious domestic violence.