If it appears to the Governor that the power of the locality is not sufficient to enable the sheriff or other officer to execute process delivered to him or to suppress riots and to preserve the peace, he may order law-enforcement agencies, national guard, militia or other agencies of the Commonwealth or localities as may be necessary to execute such process and to preserve the peace. All persons so ordered or summoned by the Governor are required to attend and act. Any person who, without lawful cause, refuses or neglects to obey the command, shall be guilty of a Class 1 misdemeanor.