May 22, 2013 1:30 pm Oklahoma Tornado Cleanup, Cost Tabulation Begins Nearly 13,000 homes were damaged or destroyed in the Oklahoma tornado, officials said Wednesday as cleanup efforts began. NBC4’s John Cadiz Klemack reports from Moore, OK. US & World Videos 18:12 Police begin to clear protesters from USC campus 2:34 Campus police union blames UCLA for violent response 3:18 USC's commencement preparation includes increased security patrol 1:56 1 person killed after car crashes into South LA church 3:30 Protest on USC campus continues ahead of graduation