51 Pa.C.S. § 4107

Members of the Pennsylvania Military Forces on State duty shall receive legal assistance from the Commonwealth for any charge of criminal or civil liability resulting from their duty. The assistance shall be limited to members acting under lawful orders or on good faith reliance on an order which a reasonable person would consider to be lawful under the circumstances. No assistance shall be provided by the Commonwealth when the Pennsylvania National Guard is called into the service of the United States.