LONG BEACH — For the past 37 years, Oral Alfred Stuart Jr. was classified as AWOL and a Marine Corps deserter. But his family never believed it. Even if Stuart had left his beloved Corps, which he voluntarily joined in 1974 and proudly tattooed on his arm, he never would have left his parents without so much as a goodbye. "I always believed something must have happened to him. He loved the Marine Corps ... (and) he would have been in touch with our mother," insisted Carl Stuart, Stuart's older brother and one of only a few surviving family members....