Ariz. Rev. Stat. § 13-3729
A. It is unlawful for a person to operate a model aircraft or a civil unmanned aircraft if the operation:
D. This section does not:
3. Prohibit a city, town or county from enacting or adopting ordinances or rules that regulate the takeoff or landing of a model aircraft in a park or preserve owned by the city, town or county if:
F. For the purposes of this section:
3. "Critical facility" means any of the following: