Ala. Code § 1-2B-1: Display of Flag.

On and after July 1, 2009, each state-owned building and each state park at which the flag of the United States is displayed and each rest area along the state and interstate highway systems may also display a POW-MIA flag, if such flags are available free of charge to the agency that occupies the building, to the state park, or to the rest area and if such display is in accordance with federal laws and regulations.