SAN DIEGO — Katy Perry loves a man in a uniform. The pop superstar met dozens of service members while working on the special "VH1 Divas Salute the Troops" this weekend near San Diego. "There was a kid who I met backstage who was rather chatty, but adorable," Perry recalled. "He was really sweet. He was 19. He had such a good heart. He said, 'Yes, ma'am' to me. 'Yes ma'am!' I was like, 'O.K.! Yes, sir!'" A VH1 publicist estimated an audience of 27,000 attended the nearly three-hour taping of the concert Friday night at the Marine Corps Air Station in Miramar. The show, which airs Sun...