The Air Force CV-22, a special operations-modified version of the V-22 Osprey tilt rotor aircraft, rolls out at Bell Helicopter Textron’s plant in Fort Worth, Tex.
The U.S. began extensive air and artillery strikes against Islamic State group targets in Syria on Dec. 19 in retaliation for the killing of three Americans on Dec. 13 by a gunman affiliated with ISIS, U.S. officials said.

