The Vietnam Wall Experience (a.k.a. the Dignity Memorial Vietnam Wall) is a traveling three-quarter-scale model of the Vietnam Veterans Memorial in Washington, D.C. It's currently "temporarily retired" at Fort Benning, Georgia, but prior to that it was exhibited all over the country. It came to Staten Island in May 2003, and it seems that a time capsule was left here to commemorate its visit. I'm not sure what the capsule contains, but perhaps, like a capsule that was buried in Tucson after the wall visited in 2005, it's filled with "memorabilia that was left at the wall".