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It was Norway's bloodiest attack in decades.
This man into sporadic admitting He alone is responsible for the car bombing and shooting spree that left almost seventy people then experts call -- a lone wolf attack.
No warning something like that could happen in the US.
The FBI and Homeland Security releasing this memo cautioning law enforcement across the country a potential attacks by a single person or small group.
That kind of attack is them is the most.
Difficult to prevent because there's nothing to intercept.
Massacre of the memo mentioned.
Or 21 year old -- Jason -- do.
He's been indicted on federal charges of planning an attack at Fort Hood in Texas the site of the shooting Rampage in 2009 by a lone gunman.
And follower of a radical American cleric.
Authorities also point to the murders of two US airman they were gunned down in -- at Frankfurt airport another -- will strike.
The US commander in chief believes such an attack is America's biggest threat in a TV interview President Obama says quote.
The most likely scenario that we have to guard against right now and said being more of a lone wolf operation than a large well coordinated terrorist attack.
The federal law enforcement officials are giving tips to local police urging them to step up patrols in places that could be potential targets.
And encouraging them to report suspicious activity.
In Washington Catherine Herridge Fox News.
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