### Question
How does the law define personnel security investigation?


### Answer
Under *50 U.S.C. § 435b*, **personnel security investigation** is defined as:

> any investigation required for the purpose of determining the eligibility of any military, civilian, or government contractor personnel to access classified information

#### Citation:
  - *50 U.S.C. § 435b*
  - Heading: **CHAPTER 15-NATIONAL SECURITY > SUBCHAPTER VI-ACCESS TO CLASSIFIED INFORMATION**

