PETESBURG-AK A local dance group will bring some of the tougher issues of teenage life to the stage in Petersburg this weekend. Mitkof Island Dance Troupe will perform the new show PG13 for the public Sunday afternoon and again for the High School early next week. Using music and movement, emotion and expression, the performance aims at raising awareness about some of the struggles and choices that many teens face. Matt Lichtenstein stopped by the Steppin-Out dance studio for a preview this week: