37 U.S.C. § 909
STATUTORY NOTES AND RELATED SUBSIDIARIES
EFFECTIVE DATE Pub. L. 107-107, div. A, title VI, §623(b), Dec. 28, 2001, 115 Stat. 1143, provided that: "Section 909 of title 37, United States Code, as added by subsection (a)(1), shall apply with respect to pay periods beginning after September 11, 2001."