A U.S. Air Force KC-135 Stratotanker aerial refueling aircraft from the 909th Air Refueling Squadron refuels a 44th Fighter Squadron F-15 Eagle during a training mission over Okinawa, Japan, April 5, 2013. The KC-135 and F-15 are two of five aircraft regularly operated from Kadena Air Base. (U.S. Air Force photo/Senior Airman Maeson L. Elleman)
A U.S. Air Force KC-135 Stratotanker aerial refueling aircraft from the 909th Air Refueling Squadron refuels a 44th Fighter Squadron F-15 Eagle during a training mission over Okinawa, Japan, April 5, 2013. The 18th Wing regularly conducts flight training to ensure pilots remain proficient and mission ready for the common defense of Japan and the Asia-Pacific region. (U.S. Air Force photo/Senior Airman Maeson L. Elleman)
A U.S. Air Force KC-135 Stratotanker aerial refueling aircraft from the 909th Air Refueling Squadron refuels a 44th Fighter Squadron F-15 Eagle while two other F-15s fly in formation during a training mission over Okinawa, Japan, April 5, 2013. The KC-135 and F-15 are two of five aircraft regularly operated from Kadena Air Base. (U.S. Air Force photo/Senior Airman Maeson L. Elleman)
A U.S. Air Force KC-135 Stratotanker aerial refueling aircraft from the 909th Air Refueling Squadron flies alongside two 44th Fighter Squadron F-15 Eagles during a training mission over Okinawa, Japan, April 5, 2013. The 18th Wing regularly conducts flight training to ensure pilots remain proficient and mission ready for the common defense of Japan and the Asia-Pacific region. (U.S. Air Force photo/Senior Airman Maeson L. Elleman)