The National Park Service and the U.S. Navy will host a joint memorial ceremony commemorating the 66th anniversary of the attack at Naval Station Pearl Harbor's Kilo Pier from 7:40 to 9:30 a.m. today.

More than 2,000 people are expected.

The public will be required to board U.S. Navy boats or special buses departing from the USS Arizona Memorial visitor center to be transported to Kilo Pier and the commemoration site.

Seats on the boats and buses are limited and are available on a first-come, first-served basis.

The first U.S. Navy boat and buses will depart from the visitor center at 6 a.m. The last boat departs at 7 a.m.

The Kilo pier site is covered, but no concessions will be available, and organizers recommend bringing a bottle of water.

U.S. FLAG TO BEGIN 6-MONTH JOURNEY

As part of today's memorial, the White House Commission on Remembrance will start a six-month journey of "Old Glory" with a flag-raising on the USS Arizona memorial, and then at the Oklahoma memorial, between 9:30 and 11:15 a.m.

The Stars and Stripes will journey to more than 20 other states to honor the sacrifices of fallen patriots.

CREW MEMBER'S ASHES RETURNING

A more private remembrance will take place in the afternoon, when USS Arizona crew member Millard Ramsdell's ashes are returned to the sunken battleship, and the ashes of his wife, Cathryn, are scattered close by from the memorial.

Millard Ramsdell, who piloted a Kingfisher airplane designed to be catapulted off the battleship, was off the ship and recovering from an appendix removal the morning of the attack.