32 U.S.C. § 901 — Definitions

The term “homeland defense activity” means an activity undertaken for the military protection of the territory^* or domestic population of the United States, or of infrastructure or other assets of the United States determined by the Secretary of Defense as being critical to national security, from a threat or aggression against the United States.

The term “State” means each of the several States, the District of Columbia, the Commonwealth of Puerto Rico, or a territory or possession of the United States.