Leadership: Our commander in chief was to miss the wreath-laying ceremony at Arlington National Cemetery to go on vacation. Other presidents have missed it, but never at wartime. All presidents deserve a vacation, and no president is ever off the clock. But we are at war, and Memorial Day at Arlington has special significance even in peacetime. Those who defend President Obama's decision to take time off were not so understanding whenever President George W. Bush spent time at his Crawford, Texas, ranch. Obama was to be in his old Chicago-area stomping grounds, and those who attacked Bush for taking...