Barack Obama, Michelle Obama, Malia Obama, Sasha Obama

Washington : President Barack Obama, first lady Michelle Obama and their daughters Sasha and Malia, far left, walk across the South Lawn of the White House in Washington, Friday, Aug., 26, 2011, after a family vacation on Martha’s Vineyard. Urging everyone in Hurricane Irene’s path to get ready, President Obama decided to cut his vacation short Friday and return to the White House for a storm he described as potentially historic. AP/PTI(AP8_27_2011_000039B)