### Question
How is the term critical infrastructure defined?


### Answer
The term **critical infrastructure** is defined in *18 U.S.C. § 2339D* as the following:

> systems and assets vital to national defense, national security, economic security, public health or safety including both regional and national infrastructure

#### Citation:
  - *18 U.S.C. § 2339D*
  - Heading: **PART I-CRIMES > CHAPTER 113B-TERRORISM**

