General Laws

Section 41. In case of a tumult, riot, mob or body of persons acting together by force to violate or resist the laws of the commonwealth, or when such tumult, riot or mob is threatened, or in case of public catastrophe or natural disaster, and the usual police provisions are inadequate to preserve order and afford protection to persons and property, and the fact appears to the commander-in-chief, to the sheriff of a county, to the mayor or city manager of a city or to the selectmen of a town, the commander-in-chief, upon his initiative or at the request of such sheriff, mayor or city manager or selectmen, may issue his order directed to the commander of any organization or unit of the armed forces of the commonwealth directing him to order his command, or any part thereof, to appear at a time and place therein specified to aid the civil authority in suppressing such violations, preserving order, affording such protection and supporting the laws.