Vince Silas and his second guide dog, Philip, just finished an intensive training program together in San Rafael, Calif. The yellow Labrador retriever will pick up where Othello, a golden retriever, left off. Othello, who guided Silas for nine years, is retiring. Silas runs a cafeteria for the Department of Social Services and uses his guide dog to help him navigate heavy traffic and other obstacles in downtown Salt Lake City. Othello kept Silas' wife, Laura, company while the new dog and its master were in training.