Official: FBI tracking radicalized Americans back from Syria

Airstrikes Tuesday took place in the ISIS stronghold of Raqqa, a U.S. official told CNN. It's the first strikes against the terror group inside the country since President Barack Obama's announcement this month that he was prepared to expand the American efforts beyond targets in Iraq.

U.S. airstrikes hit ISIS inside Syria for first time

The airstrikes come as ISIS is calling on lone wolves to kill civilians in coalition countries on their own soil, with administration officials warning that a number of Americans who went overseas to fight with terrorist groups are back in the United States.

OutFront, Congressman Mike Turner, a Republican from Ohio on the House Armed Services Committee.