David Karras Jr., a third-grader at Riverbend School in Athol, thought of a struggling friend when he was asked to write down a holiday wish for his school’s Christmas tree. The plea for help with a water bill caught the eye of Salvation Army Lieutenant Michael Buzzard (above), who spearheaded the effort to raise enough money to get water service restored for Karras’s friend Kristian Yagovane and his mother, Vanessa Mundell. B2.