5 U.S. Code § 4522
5.U.S. Code § 4522 is about General provision. It is under Part 3 (Employees) Subpart C (Employee Performance) Subchapter 3 (Award To Law Enforcement Officers For Foreign Language Capabilities) Chapter 45 (Incentive Awards) of Title 5 (Government Organizations and Employees) of the Code.
An award under this subchapter is in addition to the basic pay of the recipient.