Controversy has surrounded newly freed Army Sgt. Bowe Bergdahl since his release from Taliban captivity, with some in the military, including members of his own unit, claiming he is a deserter, not a war hero. But Sherry Horton knows a different Bergdahl than the one the world has come to see in the chilling proof of life videos the Taliban released. "He's a very interesting guy, he was very quiet, he was an observer," Horton said. Horton, the artistic director of Sun Valley Ballet in Idaho, said she was Bergdahl's ballet teacher and later, she became his roommate in his...