In this chapter,
(1) “executive authority” includes the governor and a person performing the functions of governor in a state other than this state;
(2) “governor” includes
(A) a person performing the functions of governor by authority of the law of this state; and
(B) the lieutenant governor or the head of a principal department in the executive branch appointed by the governor to act on behalf of the governor in performing extradition duties under this chapter; the appointment shall be in writing and filed with the lieutenant governor;
(3) “state,” referring to a state other than this state, includes another state or possession of the United States.