public sector employee
(10) “public sector employee”— (A) means an individual employed by a State, political subdivision of a State, or Indian tribe and who during the course of employment has responsibilities related to responding to an accident or incident involving the transportation of hazardous material; (B) includes an individual employed by a State, political subdivision of a State, or Indian tribe as a firefighter or law enforcement officer; and (C) includes an individual who volunteers to serve as a firefighter for a State, political subdivision of a State, or Indian tribe.