During a week when Charles Gibson was on vacation and was spelled on ABC's World News by the relatively youthful David Muir and Elizabeth Vargas, NBC Nightly News with Brian Williams took back the top spot in the network news competition for the first time in 12 weeks. The Williams newscast was watched by an average 7.49 million viewers; ABC's by 7.2 million. Katie Couric's audience number 5.71 million.