. >> people watcng have never been to one of these ceremonies, i have found them profoundly moving.side, which is what faces that amphitheater, it says here rests in honored glory an american soldier known but to god. talk to us, general, about the significance of this tomb and of the ceremony to have the commander in chief there on this memorial day. >> well, it's really a very moving and permanent tribute to america's war dead. arlington national cemetery is just simply beautiful and giant and restful and quiet. and there the tomb of the unknown soldiers, service members, 24 hours a day, seven days a week, 365 days a year. permanently under the guard of the third infantry regiment. something every american should see, to observe that ceremony. the president goes there every memorial day and will lay a wreath accompanied by the commanding general of the district of washington to honor america's war dead. it's a beautiful ceremony. >> and it does happen, we should say, every day of the year. i mean, people come and lay wreaths at the tomb of the unknowns and we see the guard that is