put yr arms up just like this. couric: tonight, stopping terrorists. an exclusive look at the new body scanners coming next week to airports all across america, but can they do the job? i m katie couric. also tonight, cleveland police under fire. why wasn t an alleged serial killer arrested sooner? there s something wrong with this picture. this would not have happened anywhere else. couric: and hollywood made him famous. tonight the real-life sequel, how a teacher s students are now hoping they ll be able to deliver for him. it s only fair to give back what he has given to you. captioning sponsored by cbs from cbs news world headquarters in new york, this is the cbs evening news with katie couric. couric: good evening, everyone. the christmas day attempt to blow up a jetliner over detroit has added new urgency to finding better way to screen passengers at airports. and next week, the t.s.a. will begin using the latest generation of full-body scanners, first to