US President George W. Bush asked Americans to pay tribute to veterans by pausing on the Memorial Day holiday for "a moment of remembrance." Bush had several suggestions for how to honor the sacrifices of those who have fought for the United States - place a flag at a veteran's grave, go to a battlefield or say a prayer. He said the moment of remembrance would be marked Monday at 3 p.m. local time. "At that moment, Major League Baseball games will pause, the National Memorial Day parade will halt, Amtrak trains will blow their whistles and buglers in military cemeteries will play taps," he said Saturday in his weekly radio address. The president said that as people "fire up the grill" and mark the unofficial beginning of summer, they need to honor the sacrifices that make freedom possible.