Key members of “The Walking Dead” team will appear at NAB Show, which takes place in Las Vegas in April. Cast member Steven Yeun, “The Walking Dead” comic book creator and series executive producer Robert Kirkman and AMC President Charlie Collier are confirmed to participate in the general session “More of What You Crave: The World of ‘The Walking Dead,’” scheduled for Tuesday, April 14 from 9:00-10:00 a.m.