Girl Scout troops in Wisconsin and across the U-S are holding vigils today to honor and remember three young girls and a troop leader killed near Chippewa Falls . Thirty-two-year-old Sarah Schneider, ten-year-old Haylee Hickley, nine-year-old Jayna Kelly and ten-year-old Autumn Helgeson were picking up trash along a highway last Saturday when they were fatally struck by a hit-and-run driver. Another ten-year-old victim remains hospitalized. The National Alliance of Girl Scouts expects more than 600 vigils this afternoon and is asking troops to perform a community service project to honor Troop 3055. Area vigils are planned in Mondovi, Menomonie and Marshfield.