President Barack Obama, second from left, holding hands with his daughter Malia Obama, left, walks off of Air Force One as daughter Sasha Obama, second from right, and first lady Michelle Obama, right, follow at Andrews Air Force Base in Md., Sunday, Aug. 23, 2015. The president is returning to Washington after he and his family spent more than two weeks vacationing on the Massachusetts island of Martha's Vineyard. (AP Photo/Susan Walsh)