A 493rd Fighter Squadron F-15C Eagle takes off from Royal Air Force Lakenheath, England, Aug. 15, 2014, to participate in bilateral training at Graf Ignatievo Air Base, Bulgaria. The F-15 fighter pilots’ flying training deployment to Bulgaria focuses on maintaining joint readiness while building interoperability capabilities. (U.S. Air Force photo by Airman 1st Class Erin O’Shea/Released)