The U.S. is on a heightened state of alert after the Department of Homeland Security warned of lone-wolf attacks in response to airstrikes on Syria.
This comes as the Pentagon says Monday night's airstrikes targeted not just ISIS but perhaps an even more immediate threat to the U.S. homeland called Khorasan.
According to a U.S. official, Khorasan, an al Qaeda-linked organization, was ready to blow up commercial flights.
CNN's Deborah Feyerick is OutFront with details.
Below, White House Deputy National Security Adviser Tony Blinken weighs in on the attacks.