Pa Cheng Vang always seemed happy in pictures with his family. Whether it was Christmas, Halloween or a visit to the aquarium, Vang's smile beamed in photos with his wife and six children. But Vang's face was somber Saturday as he and hundreds of others said goodbye to Muaj Tshav Ntuj, Pa Cheng's 4-year-old son who died in a fire that killed three other children and hospitalized the rest of ...