The granite wall, and the names etched in it, elicit a wide range of responses. Some stand in silence; others pray, or offer a final salute. Many visitors to the Vietnam Veterans Memorial in Washington, D.C., feel compelled to leave offerings of love or gratitude or remembrance ... a pair of boots, photographs, letters, even a last cigarette.
Each evening National Park Service rangers collect the items and send them to a massive warehouse in Maryland filled to the rafters with objects left since 1982.
Ranger Janet Folkerts catalogs the items and keeps them in pristine condition. She doesn't know the total number of objects left.
"We have a guess of 400,000. We never will fully know until we have everything cataloged, which we don't have yet," she told CBS News correspondent Chip Reid.