U.S. President Barack Obama walks towards Marine One on the South Lawn of the White House in Washington

 
U.S. President Barack Obama walks towards Marine One on the South Lawn of the White House in Washington
U.S. President Barack Obama walks towards Marine One on the South Lawn of the White House in Washington, May 23, 2012. Obama is leaving for Colorado Springs to attend the USAF Academy commencement ceremony. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS MILITARY)