this is the cbs evening news with scott pelley. schieffer: good evening. scott s off tonight. i m bob schieffer. well, it was the picture that once you saw it you could not forget it. jared lee loughner, the 23-year-old college dropout who gravely wounded congresswoman gabrielle giffords in an inexplicable shooting spree last year that left six dead and 13 wounded. today a federal judge in arizona ruledded that loughner was competent to understand the charges against him, allowed him to plead guilty and he will spend the rest of his life behind bars. bill whitaker s at the federal courthouse in tucson. bill? reporter: bob, judge larry burns, who has presided over this case since the beginning, said he saw a different jared loughner today. loughner, who shouted and ranted at a hearing last year today was quiet and subdued and spoke with a slurred but understandable voice. for most of the two-hour hearing, loughner sat calmly by his lawyer s side as his court appointed ps