### Question
How is the term homeland defense activity defined?


### Answer
The term **homeland defense activity** is defined in *32 U.S.C. § 901* as the following:

> 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

#### Citation:
  - *32 U.S.C. § 901*
  - Heading: **CHAPTER 9-HOMELAND DEFENSE ACTIVITIES**

