the nation should celebrate it as they see fit. these are the sacrifices people made to give you these freedoms. we enjoy, you know vet raper enjoy the cookout and the beer. otherwise, without those sacrifices, the situation may be different. geoff, i want to get a sense of this place. i mentioned arlington national cemetery as the nation s most hallowed ground. you work miles away from it. i know you ve been there. give us a sense of the ceremony surrounding all of this that we re going to see today. reporter: arlington is a sprawling place, david. i drive by it every day on my way to work. i m really struck mainly by the way in which the grave sites are really inches their way toward the highway. it s because, david, arlington is running out of space for burials. this is something that s capturing a lot of people s attention. i can tell you that there are only about 100,000 spaces left. the executive director of arlington said at the current