(a) A local government may provide emergency assistance to another local government, whether or not the local governments have previously agreed or contracted to provide that kind of assistance, if:
(1) in the opinion of the presiding officer of the governing body of the local government desiring emergency assistance, a state of civil emergency exists in the local government that requires assistance from another local government and the presiding officer requests the assistance; and
(2) before the emergency assistance is provided, the governing body of the local government that is to provide the assistance authorizes that local government to provide the assistance by resolution or other official action.
(b) This section does not apply to emergency assistance provided by law enforcement officers under Chapter 362, Local Government Code.