Two U.S. Air Force A-10 Thunderbolt IIs depart to continue a mission after receiving fuel from a KC-135 Stratotanker assigned to the 447th Air Expeditionary Group over Syria, Dec. 1, 2017. A-10 Thunderbolt IIs have been involved in fighting from Mosul to Raqqa and are currently used in the fight against ISIS in countries such as Iraq, Syria and Afghanistan. (U.S. Air Force photo by Staff Sgt. Paul Labbe)