美国有线新闻 CNN 2015-08-26（在线收听）

 For making us part of that. I am Carol A with ten minutes commercial free current events. First up, a US embassador says we often use the word hero, in this case, it's never been more appropriate. She is talking about three Americans who are on vacation in Belgium. They were on a high speed train when a man with rifle started shooting. The three American, two of them have served in the US military, fought against the attacker. And with the help from a French man and a Briton, they were all able to overpower the gunman. World leaders say they stop what could have been a mass murder. The suspect is a Morocan, who is known to European police for his radical Muslim views. He was arrested, the attempted attack was the kind that has government worldwide unguard. So what start with a direct question. That is, are you over terrorist threat warning? If you are understandable, there are so many of them and they seem constant. What do we explain what behind the current threat warning about the risk of lone wolf terrorist attack here on the US homeland. And the current threat warning is not what they are calling a intel circle, credible and specific in this, they do not know a particular target, a particular group, a particular time. But US intel US law enforcement is genuinely concerned about ISS call to arm to supporters around the world. There is a different opinion among counter terrorism officials I speak to, as how unique threat is. Some say it is the worst say since the 911, others say they have seen this threat level many times since then. But regardless that differences of opinions, what is different now is the level of unperdictability. Because the lone golf act alone, or in small groups, with little operational planing, there is no operational planning to interrupt since there is no contact or little contact with leadership back in Iraq, Syria and elsewhere, that can give an indication of an attack to come. So there are fewer chances to get earlier warning of terrorist attack, and fewer chances to stop it. The good news is the lone wolf attack tend to be less complex, and therefore less deadly. So let me leave you with one hopefully comforting thought, the actual risks to Americans of being hurt by a terrorist attack on US soil is minuscule, but the power of terrorism if it is even a small risk makes Americans feel unsafe.