About 2,000 sailors, veterans, community leaders and guests went to Pearl Harbor and bowed their heads in remembrance of the attack that hurled the United States into World War II 64 years ago.

Four F-15s flown by the Hawaii Air National Guard roared above the bay, including one jet that veered off from the group to symbolize the 2,390 people killed. The USS Chaffee passed by the sunken USS Arizona, where more than 900 sailors remain entombed.

The crowd, which included about 20 Pearl Harbor survivors, observed a moment of silence at 7:55 a.m. -- the exact time the attack began.

"December 7th, 1941, was not just a day of infamy. In many ways it was a day of discovery for America and for the world. It changed us, it hurt us, it made us stronger -- as did September 11th," said Adm. Michael G. Mullen, the Navy's most senior sailor. "And that is why we must never forget the events and sacrifices of that terrible day."

Survivors later laid wreaths in honor of ships that were destroyed. Trumpeters from the Pacific Fleet Band played taps.

The crowd gathered on a grassy area outside the visitors' center from which tourists take boats to the Arizona Memorial, erected over the sunken battleship.

The attack on Pearl Harbor and other military bases on Oahu lasted two hours, leaving 21 U.S. ships heavily damaged and 323 aircraft damaged or destroyed. In addition to the 2,390 people killed, 1,178 were wounded.

Navy reservists from the USS Ward, which fired the first shots of the war when its crew spotted and sank a Japanese midget submarine, also were honored this year.

-- Associated Press

The flag flies at half-staff at the USS Arizona Memorial in Hawaii.