Jan. 20 (UPI) -- John Harbaugh is excited to coach quarterback Jaxson Dart and aims to lead the New York Giants to Kansas City Chiefs -like success, he said Tuesday. Harbaugh made the comments at his introductory news conference at Quest Diagnostics Training Center in East Rutherford, N.J. The Giants hired the former Baltimore Ravens coach, who was fired Jan. 6, on Saturday. "Our focus is simple," Harbaugh said. "It starts with building a team that is physical and tough, that's capable of