An U.S. Air Force KC-135 Stratotanker from the 340th Expeditionary Air Refueling Squadron refuels a F-18 from the Royal Canadian Air Force over Southwest Asia in support of Operation Inherent Resolve, Dec. 4, 2015.
OIR is the coalition intervention against Daesh. (U.S. Air Force photo by Tech. Sgt. Nathan Lipscomb). Original public domain image from Flickr