Col. Francis S. Gabreski of the 51st Fighter Wing downs a MiG-15, which gives him 6.5 victories in Korea. Combined with his 28 victories in World War II, he is the highest scoring Air Force ace with victories in two wars.
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.

