A U.S. Air Force B-52 Stratofortress leads a formation of aircraft including two Polish air force F-16 Fighting Falcons, four U.S. Air Force F-16 Fighting Falcons, two German Eurofighter Typhoons and four Swedish Gripens over the Baltic Sea, June 9, 2016. The formation was captured from a KC-135 from the 434th Air Refueling Wing, Grissom Air Force Base, Indiana as part of exercise BALTOPS 2016. (U.S. Air Force photo/Senior Airman Erin Babis)