weapon of mass destruction
(2) the term “weapon of mass destruction” means— (A) any destructive device as defined in section 921 of this title ; (B) any weapon that is designed or intended to cause death or serious bodily injury through the release, dissemination, or impact of toxic or poisonous chemicals, or their precursors; (C) any weapon involving a biological agent, toxin, or vector (as those terms are defined in section 178 of this title ); or (D) any weapon that is designed to release radiation or radioactivity at a level dangerous to human life; and