Conn. Gen. Stat. § 27-17: Armed forces may be called in case of riot.

In case of riot or civil commotion in any place in this state, any official whose duty it is to enforce the civil authority at such place may, if he considers that the force at his disposal is not sufficient, inform the Governor, who may order out such portion of the armed forces of the state as he thinks advisable and may direct the commanding officer of the force selected to communicate with the person making application to assist such person in preserving the peace and to use such portion of his force as may be necessary therefor.