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NEW YORK, NY - MARCH 18: Outside of a U.S. Federal court during the arraignment of Tairod Pugh, a former U.S. Air Force mechanic accused of attempting to join the terrorist organization ISIS, on March 18, 2015 in New York City. Pugh, 47 plead not guilty to charges of trying to enter Syria to join ISIS. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - MARCH 18:  Outside of a U.S. Federal court during the arraignment of Tairod Pugh, a former U.S. Air Force mechanic accused of attempting to join the terrorist organization ISIS, on March 18, 2015 in New York City. Pugh, 47 plead not guilty to charges of trying to enter Syria to join ISIS.  (Photo by Spencer Platt/Getty Images)