Subchapter v. Capitol-Flown Flags for Families of Fallen Heroes 2 U.S. Code §1881. Definitions 2 U.S. Code §1881a. Providing Capitol-flown flags for families of fallen heroes 2 U.S. Code §1881b. Regulations and procedures 2 U.S. Code §1881c. Authorization of appropriations 2 U.S. Code §1881d. Effective date