Developing:
Missing Air Algerie flight has crashed, says Algerian aviation official

President Barack Obama, left, watches student Anh Ly, right, control a solar powered vehicle during a classroom visit to Manor New Technology High School, Thursday, May 9, 2013 in Manor, Texas. (AP Photo/Pablo Martinez Monsivais)

Associated Press
President Barack Obama, left, watches student Anh Ly, right, control a solar powered vehicle during a classroom visit to Manor New Technology High School, Thursday, May 9, 2013 in Manor, Texas. (AP Photo/Pablo Martinez Monsivais)
President Barack Obama, left, watches student Anh Ly, right, control a solar powered vehicle during a classroom visit to Manor New Technology High School, Thursday, May 9, 2013 in Manor, Texas. (AP Photo/Pablo Martinez Monsivais)