By AUDREY McAVOY
PEARL HARBOR, Hawaii (AP) -- More than 2,000 people at Pearl Harbor and many more around the country are marking the 71st anniversary of the Japanese attack that killed thousands of people and launched the United States into World War II.
The USS Michael Murphy sounded its ship's whistle Friday to start a moment of silence at 7:55 a.m., marking the exact time the bombing began in 1941.
Crew members lined the edge of the Navy guided-missile destroyer as it passed the USS Arizona, a battleship that still lies in the harbor where it sank. Hawaii Air National Guard F-22 fighter jets flew overhead in a special formation to break the silence.
Online, Pearl Harbor became a popular topic on Facebook and other social networks, trending worldwide on Twitter and Google Plus.