from america s news headquarters, i m marianne rafferty. a developing story out of pakistan. secretary of state hillary clinton has arrived in islamabad for a surprise visit. relations between the u.s. and pakistan have been strained since the killing of osama bin laden earlier this month. he was found hiding out in pakistan. the u.s. wants more help in the fight against terrorism. billions of dollars in u.s. aid could hinge on pakistan s cooperation. search-and-rescue crews are looking for more than 200 missing people, five days after a deadly tornado tore through joblin, missouri. officials believe many are alive but haven t been able to get in touch with friends and family. officials have been working overif i m to identify bodies. at least 126 people are confirmed dead after sunday s