Government Code §418.1015

(a) The presiding officer of the governing body of an incorporated city or a county or the chief administrative officer of a joint board is designated as the emergency management director for the officer's political subdivision. (b) An emergency management director serves as the governor's designated agent in the administration and supervision of duties under this chapter. An emergency management director may exercise the powers granted to the governor under this chapter on an appropriate local scale. (c) An emergency management director may designate a person to serve as emergency management coordinator. The emergency management coordinator shall serve as an assistant to the emergency management director for emergency management purposes. (d) A person, other than an emergency management director exercising under Subsection (b) a power granted to the governor, may not seize state or federal resources without prior authorization from the division or the state or federal agency having responsibility for those resources.