U.S. Marine Lance Cpl. Mario Ramos-Villalta flashes a broad smile from beneath his camouflage cap as he talks about the country he loves and why he became a Marine.
He's fought twice in Iraq and survived an attack on his Humvee in October 2005. Now, he's preparing for deployment to Afghanistan.
Yet he's not even an American. He's a citizen of El Salvador serving in the U.S. military. 
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CNN's Gregg Canes and Traci Tamura contributed to this report.
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