U.S. agents stand on the tarmac as they wait for Air Force One carrying U.S. President Barack Obama to arrive at the presidential hangar at Benito Juarez International Airport in Mexico City

 
U.S. agents stand on the tarmac as they wait for Air Force One carrying U.S. President Barack Obama to arrive at the presidential hangar at Benito Juarez International Airport in Mexico City
U.S. agents stand on the tarmac as they wait for Air Force One carrying U.S. President Barack Obama to arrive at the presidential hangar at Benito Juarez International Airport in Mexico City May 2, 2013. REUTERS/Tomas Bravo