All across the United States, Americans honor the fallen on Memorial Day, from the president's traditional annual remembrance at the Tomb of the Unknowns at Arlington National Cemetery to a beach memorial in Santa Monica, Calif.
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President Barack Obama and First Lady Michelle Obama participate in a ceremony to commemorate the 50th anniversary of the Vietnam War at the Vietnam Veterans Memorial Wall in Washington DC, on May 28, 2012. UPI/Kristoffer Tripplaar/Pool
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