The Space and Missile Systems Center transfers from Air Force Materiel Command to Air Force Space Command, thereby placing cradle-to-grave oversight of acquisition and operation of space systems under a single command.
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.

