A U.S. Secret Service agent waits by the spare limousine before President Barack Obama's motorcade departs for a tour of the Forbidden City in Beijing, China, Nov. 17, 2009. (Official White House Photo by Pete Souza)
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A U.S. Secret Service agent waits by the spare limousine before President Barack Obama's motorcade departs for a tour of the Forbidden City in Beijing, China, Nov. 17, 2009. (Official White House Photo by Pete Souza)
