A Chinese paramilitary policeman, back, a U.S. secret service officer, front, as they guard a tarmac before the landing of a plane carrying U.S. First Lady Michelle Obama, her daughters and her mother, arrive at Capital International Airport in Beijing, China, Thursday, March 20, 2014. Michelle Obama has arrived in Beijing with her mother and daughters to kick off a seven-day, three-city tour where she will focus on education and cultural exchange. (AP Photo/Alexander F. Yuan, Pool)
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