5 U.S. Code § 2101a
5 U.S. Code § 2101a is about The Senior Executive Service. It is under Part 3 (Employees) Subpart A (General Provisions) Chapter 21 (Definitions) of Title 5 (Government Organizations and Employees) of the Code.
The “Senior Executive Service” consists of Senior Executive Service positions (as defined in section 3132(a)(2) of this title).