Ga. Code § 38-3-32
When any person, firm, or corporation owning or controlling any real estate or other premises authorizes and permits any emergency management agency, board, or other authority of this state or of any political subdivision of this state to use the premises without charge therefor for the purpose of sheltering persons during an actual or practice emergency or disaster as contemplated by Articles 1 through 3 of this chapter, the person, firm, or corporation, at such times and for such periods during which the premises are occupied and actually employed for purpose of emergency management, shall be clothed with the sovereign immunity of the state. No civil action shall be brought or maintained against any such person, firm, or corporation to recover damages for personal injuries or death of any person while on the premises during an actual or practice emergency, disaster, or enemy attack, or for the loss or destruction of personal property brought upon the premises by any person seeking shelter thereon during an actual or practice emergency or disaster.
OCGA § 38-3-32