HORIZON SCAN U.S. Air Force Capt. Christopher K. Jordan scans the horizon while flying a combat sortie mission to support Afghanistan's presidential elections, April 5, 2014. Jordan, an E-3B sentry airborne warning and control system aircraft pilot, is assigned to the 968th Expeditionary Airborne Air Control Squadron. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 048945-M-SYD54-420.jpg Photo Gallery