VALLEY STREAM - Long Islanders gathered in the Village of Valley Stream today for a ceremony to mourn those lost 11 years ago in the Sept. 11 attacks, and a monument to victims was unveiled. The monument is made of a 15-foot steel beam from one of the fallen towers. It's held up by two towers, aligned diagonally, and it sits upon a patio that's shaped like the Pentagon. The monument points in the direction of the Freedom Tower so that it's always looking toward the future, village officials say. Debbie Palmer, the widow of a Sept. 11 victim, says her husband used to train for marathons in the very park that the monument now sits in. It's where their children learned to ride their bikes, and she says it's very fitting that a lasting monument to the fallen towers and victims has been added to the park.