Coalition Troops U.S. Defense Secretary Ash Carter speaks with coalition troops on Incirlik Air Base, Turkey, Dec.15, 2015. Carter, who discussed the push to accelerate the campaign against the Islamic State of Iraq and the Levant, or ISIL, is on a weeklong trip to the Middle East. DoD photo by Army Sgt. 1st Class Clydell Kinchen SHARE: Download: Full Size (1.63 MB) Credit: SFC Clydell Kinchen VIRIN: 151215-D-LN567-517.JPG Photo Gallery