A PolAF F-16 receives fuel from a USAF KC-135 assigned to the 100th ARW, RAF Mildenhall, during the NATO Baltic Air Sovereignty Training Event on April 7, 2009. Seven nations' air forces, participated in the event, which took place in the skies over Estonia, Latvia and Lithuania
http://www.airramstein.nato.int/bast_e.htm
http://www.f-16.net/news_article3366.html