Threat Level Raised on US Military Bases

Security conditions at U.S. military bases were raisedThursday night, because of growing concern of a jihadist threat in the United States.

The move comes hours after FBI Director James Comey raised the prospect there are thousands of ISIS followers online in the U.S.

A U.S. official confirmed to CNN that U.S. military bases are now at Force Protection Bravo, which is defined by the Pentagon as an "increased and predictable threat of terrorism." U.S. bases generally have not been at this level since the 10th anniversary of the 9/11attacks, the official said.