Will Istanbul attack disrupt Fourth of July air travel in US?

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The head of the CIA says he fears that the deadly attack on Istanbul Ataturk Airport could be a sign that ISIS might attempt a similar terrorism in America. But NBC’s Tom Costello reports for TODAY that most travelers will not see a big difference in security at most airports around the country, because it’s difficult to do much more than has already been done. (Run time: 1:48)