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Nadir Soofi, left, and Elton Simpson are the two suspects in the Garland, Texas shooting.
Nadir Soofi, left, and Elton Simpson are the two suspects in the Garland, Texas shooting.

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    Are lone wolf terror attacks happening in U.S.?

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Are lone wolf terror attacks happening in U.S.?

CNN's Jim Sciutto takes a closer look at lone wolf terror attacks in the United States and the connection with ISIS.

Are lone wolf terror attacks happening in U.S.?

CNN's Jim Sciutto takes a closer look at lone wolf terror attacks in the United States and the connection with ISIS.