>> on this sunday night, high alert. a dangerous and powerful li of stms triggers at last a dozen tornadoe throughout the dwest.p tonight, where it's headed, as morehan 50 million americans remain in its path. > moment of impact. new video show the enormous por of the typhoon as it surged ashore as many wait for relief, how me are taking matters into their own hand ten ys after the storm. meningitis outbreak, a rare strain of the potentially deadly disease discoveredt a leading universi, as thousandwait on a cision or whether to use an emergency vacne. and invisible threat. why law enforcemt now fear it could lose an important dense agait those deadly homemade plastic guns, capable of