NATO E-3A Sentry takes on fuel from an Arizona Air National Guard KC-135 Stratotanker over northern Germany during a training mission, Nov. 10. Airmen from the 161st Air Refueling Wing based in Phoenix are supporting aircrew training operations Nov. 9-20 at NATO Air Base Geilenkirchen, Germany. (U.S. Air National Guard photo by Lt. Col. Gabe Johnson)