513th brings E-3 Sentry to NATO for first time in 20 years Air Force reservists from the 513th Air Control Group arrive at NATO Air Base Geilenkirchen, Germany, via an E-3 Sentry Airborne Warning and Control System aircraft, June 1, 2017. Air Force photo by 2nd Lt. Caleb Wanzer SHARE: Download: Full Size (1.71 MB) Tags: operation atlantic resolve, Air Force Credit: 2nd Lt. Caleb Wanzer VIRIN: 170601-F-DA581-014.JPG Photo Gallery