Section, added Pub. L. 107–56, title VIII, § 801, Oct. 26, 2001, 115 Stat. 374; amended Pub. L. 108–21, title VI, § 609, Apr. 30, 2003, 117 Stat. 692; Pub. L. 109–59, title III, § 3042(a), Aug. 10, 2005, 119 Stat. 1639, related to terrorist attacks and other acts of violence against public transportation systems. See section 1992 of this title.