### Question
How does NATIONAL SECURITY define Milestone B?


### Answer
Under *50 U.S.C. § 415a*, **Milestone B** is defined as:

> a decision to enter into major system development and demonstration pursuant to guidance prescribed by the Director

#### Citation:
  - *50 U.S.C. § 415a*
  - Heading: **CHAPTER 15-NATIONAL SECURITY > SUBCHAPTER III-ACCOUNTABILITY FOR INTELLIGENCE ACTIVITIES**

