determine how many people may have been exposed to radiation. anna werner, cbs news, fort bliss, texas. >> pelley: we learned more today about the capture of one of mexico's most wanted drug lords. mexican marines caught miguel morales was caught before dawn yesterday just across the border from texas. he was traveling with his body guard, his accountant, and $2 million in cash. morales is head of a cartel known for beheading its enemies. we now know what took the life of actor cory monteith. and that story is next. next. ♪