Officials: Al Qaeda Attack Within Six Months

Intelligence officials testified on Capitol Hill this week about an imminent homeland security threat:

Al Qaeda can be expected to attempt an attack on the United States in the next three to six months, senior U.S. intelligence officials told Congress Tuesday.

The terrorist organization is deploying operatives to the United States to carry out new attacks from inside the country, including "clean" recruits with a negligible trail of terrorist contacts, CIA Director Leon Panetta said. Al Qaeda is also inspiring homegrown extremists to trigger violence on their own, Panetta added.

The annual assessment of the nation's terror threats provided no startling new terror trends, but amplified growing concerns since the Christmas Day airline attack in Detroit that militants are growing harder to detect and moving more quickly in their plots.