About 500 students from across Iowa will gather in Des Moines on Wednesday for what they’re calling Kick Butts Day, that’s as in cigarette butts. Leanna Brady is organizing the seventh annual event through the Iowa office of the American Lung Association.A former model for Winston cigarettes will talk with the kids about the tobacco industry from behind the scenes. Brady says they’ll also learn about the legislative process and will have the chance to act on the lessons they learn.Brady says health care expenses due to smoking cost the taxpayers of Iowa 617-million dollars a year.