The United States is "clearly as vulnerable as London" to attacks on its mass transit systems, and it's actually surprising there haven't been any, according to terrorism expert Neil Livingstone.
"The surprising thing is that it hasn't happened here," Livingstone says. "There will always be some people out there that are disgruntled or alienated from the societies they live in that are easy prey to people to come in and try to recruit them. They tend to be young people, the same kind of profile of people that would join a cult or something like that. And they can get them to strap on a bomb belt or backpack and walk into a crowded place.
"We're clearly as vulnerable as London, and we're, frankly, a target more in the crosshairs. They would like to bring the war back to what they feel is the belly of the beast, and they haven't been successful in doing so yet.
"But I think most observers in the law enforcement and intelligence community believe that it's no longer a question of if, but it's only a question of when, because we have the same vulnerabilities that they have in Great Britain."
Livingstone told co-anchor Hannah Storm Thursday the latest incidents send a " " from the terrorists that they won't be deterred. He tells Smith the same group seems to be behind Thursday's incidents in London as the deadly attacks earlier this month: "There are some reports that the bombs were almost identical, or maybe identical, to the bombs that exploded two weeks ago.
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