More than 2,000 high school kids and faculty members at Lakewood High School in Colorado joined forces to create a video of the student body lip-synching to Katy Perry's hit song 'Roar.' They plan to submit a portion of the video to a contest presented by 'Good Morning America' and Perry, which asks high schoolers to submit their best music video, and the singer will perform at the winning school. Kristina Behr (@KristinaBehr) has the scoop.