O.C. TROJANS: With several University of Southern...

O.C. TROJANS: With several University of Southern California alumni organizations and 20,000 alums, Orange County has more than a passing interest in the announcement Wednesday that USC President James H. Zumberge will soon step down (A28). . . . O.C. alums contributed more than $50 million to USC’s recently concluded six-year fund-raising campaign. . . . In June, Laguna Beach resident Otis Healy takes over as head of the umbrella group for all Trojan alumni organizations.