PEARL HARBOR, Hawaii — More than 2,000 people are gathering at Pearl Harbor on Friday to mark the 71st anniversary of the Japanese attack that killed thousands of people and launched the United States into World War II. Ceremonies get under way with a moment of silence at 7:55 a.m., the exact time the bombing began in 1941. The crew of a Navy guided-missile destroyer will stand on deck while the ship passes the USS Arizona, a battleship that still lies in the harbor where it sank. Hawaii Air National Guard aircraft will fly overhead. The Navy and National Park …