35 Pa. Stat. § 2007
Neither the Commonwealth or any political subdivision thereof nor their agents or representatives nor any member of a municipal or volunteer agency nor any individual, partnership, association, corporation, trustee, receiver, or any of the agents thereof, in good faith carrying out, complying with or attempting to comply with any law or duly promulgated rule, regulation or order relating to blackouts, air raid drills or other activities connected with the protection of the civil population from air raids or enemy attacks shall be liable for any injury or death to persons or damage to property as the result of such activity. The foregoing shall not affect the right of any person to receive benefits to which he might otherwise be entitled under the Workmen's Compensation Law, any pension law, nor the right of any member of a volunteer agency to receive any benefits or compensation under any act of Congress.
35 P.S. § 2007