Members of the 2013 graduating class of the United States Naval Academy throw their caps into the air marking the end of their commencement ceremony in Annapolis, Md,. Friday, May 24, 2013, where President Barack Obama spoke. (AP Photo/Pablo Martinez Monsivais)

Members of the 2013 graduating class of the United States Naval Academy throw their caps into the air marking the end of their commencement ceremony in Annapolis, Md,. Friday, May 24, 2013, where President Barack Obama spoke. (AP Photo/Pablo Martinez Monsivais)