ISIS Activity Prompts Threat Increase

Security conditions at U.S. military bases were raised Thursday night, because of growing concern of a jihadist threat in the U.S. It comes hours after FBI Director James Comey raised the prospect there are thousands of ISIS followers online in the U.S. Comey told reporters Thursday, "We have a general concern, obviously, that ISIL is focusing on the uniformed military and law enforcement. Captain Jeff Davis, spokesman for the U.S. Northern Command which oversees all U.S. military installations in the continental U.S., added, "We have the same concern about the potential threat posed by violent homegrown extremists." Davis declined to specify the new security measures. But 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."