A U.S. Air Force E-3 Sentry Airborne Warning and Control System pilot assigned to Tinker Air Force Base, Oklahoma, taxis across the flightline in support of Exercise Baltic Operations at NATO Air Base Geilenkirchen, Germany, June 5, 2018. BALTOPS is an annual joint, multinational maritime-focused exercise designed to improve training value for participants, enhance flexibility and interoperability, and demonstrate resolve among allied partner forces in defending the Baltic Sea region. (U.S. Air Force photo by Airman 1st Class Christopher S. Sparks)