RAF MILDENHALL, England â A C-17 Globemaster from the Heavy Airlift Wing, Papa Air Base, Hungary, approaches a 100th Air Refueling Wing KC-135 Stratotanker boom over Germany Nov. 12, 2010. During the training mission, both units received vital training they donât get the opportunity to do on a regular basis. (U.S. Air Force photo/Senior Airman Tabitha M. Lee)