U.S. Air Force F-15 Eagle aircraft assigned to the 67th Fighter Squadron fly alongside a KC-135 Stratotanker aircraft assigned to the 909th Air Refueling Squadron during an aerial refueling mission over the Pacific Ocean Oct. 28, 2013. The F-15s were en route to Kadena Air Base, Japan, after completing a three-week deployment to Singapore designed to improve international cohesion and further develop allied partnerships for the security of the Asia-Pacific region. (U.S. Air Force photo by Senior Airman Maeson L. Elleman)