Extending the Fight An Air Force E-3 Sentry refuels from a 340th Expeditionary Air Refueling Squadron KC-135 Stratotanker over Iraq, Jan. 18, 2017. The squadron extended the fight against the Islamic State of Iraq and the Levant by delivering fuel to the Sentry and Air Force F-16 Fighting Falcons. Air Force photo by Senior Airman Jordan Castelan SHARE: Download: Full Size (1.29 MB) Credit: Senior Airman Jordan Castelan VIRIN: 170118-F-YC884-0200C.JPG Photo Gallery