In 2010 US Army veteran Jeff Barillaro returned from Iraq with severe PTSD. Since then Barillaro, whose stage name is "Solider Hard," has been rapping about his struggles and performing for troops, veterans, and military families across the US. Erik M. Lunsford/NPR hide caption

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Sgt. Victor Medina suffered brain damage in 2009 when a roadside bomb exploded in Iraq. Blake Gordon/Aurora Photos hide caption

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Heirloom beets served at Bibiana Restaurant in downtown Washington, D.C. Joseph Silverman/The Washington Times /Landov hide caption

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Dr. Alex Dromerick co-directs the Brain Research Center at the National Rehabilitation Hospital. Here he observes Stephen Jones, a policeman who was involved in a motorcycle accident. Becky Lettenberger/NPR hide caption

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The Mall of America in Bloomington, Minn., has implemented a security program aimed at aiding the government identify suspected terrorists. Jim Mone/AP hide caption

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The Mall of America, one of the nation's largest shopping and entertainment venues, is also home to its own counterterrorism unit. Dawn Villela/AP hide caption

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Katie Hayes Luke for NPR

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