To the maximum extent practicable, the Secretary shall use national private sector networks and infrastructure for emergency response to chemical, biological, radiological, nuclear, or explosive disasters, and other major disasters . ( Pub. L. 107–296, title V, § 519 , formerly § 508, Nov. 25, 2002 , 116 Stat. 2215 ; renumbered § 519, Pub. L. 109–295, title VI, § 611(6) , Oct. 4, 2006 , 120 Stat. 1395 .) Editorial Notes Codification Section was formerly classified to section 318 of this title prior to renumbering by Pub. L. 109–295 .