### Question
How is the "head of an agency" defined?


### Answer
The term **head of an agency** is defined in *10 U.S.C. § 3451* as follows -

> the Secretary of Defense, the Secretary of Homeland Security, and the Administrator of the National Aeronautics and Space Administration

#### Citation:
  - *10 U.S.C. § 3451*
  - Heading: **Subtitle A-General Military Law > PART V-ACQUISITION > Subpart C-Contracting Methods and Contract Types > CHAPTER 247-PROCUREMENT OF COMMERCIAL PRODUCTS AND COMMERCIAL SERVICES**

