Col. John Walker, 39th Air Base Wing commander, discusses flight line operations with U.S. Air Force Gen. Hawk Carlisle, commander of Air Combat Command, during a base visit Oct. 22, 2015, at Incirlik Air Base, Turkey. Carlisle met with leadership to learn more about the 39th ABW and its mission. (U.S. Air Force photo by Senior Airman Michael Battles/Released)