In this subchapter:
(1) "Local governmental entity" means a county, municipality, or other political subdivision of this state.
(2) "Military service" means service as a member of:
(A) the Armed Forces of the United States;
(B) the Texas National Guard;
(C) the Texas State Guard; or
(D) a reserve component of the Armed Forces of the United States.
(3) "Public employee" means an employee of the state, a state institution, or a local governmental entity. The term does not include a temporary employee, an elected official, or an individual serving under an appointment that requires confirmation by the senate.