Conn. Gen. Stat. § 27-18: Calling out troops without Governor's order.

Whenever any civil officer whose duty it is to enforce the civil authority in any place in this state finds it impossible to communicate immediately with the Governor and deems the danger too imminent to admit of delay, he may make written requisition for assistance, containing a statement that he is unable to communicate with the Governor, upon the senior officer of any part of the organized militia or National Guard located in his town, city or county; and such commanding officer is authorized thereupon to exercise, with respect to calling out the troops under his command, the powers conferred by law upon the Governor, until he receives instructions or orders from the Governor.