The crew of a U.S. Air Force KC-135R Stratotanker guides their aircraft over the Alps. The crew of a U.S. Air Force KC-135R Stratotanker guides their aircraft over the Alps to perform in-flight refueling of aircraft participating in NATO Operation Allied Force on March 31, 1999. The Stratotanker is from the 351st Air Refueling Squadron based at RAF Mildenhall, United Kingdom, with the 100th Air Expeditionary Wing. SHARE IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 944420-M-TXB29-065.jpg Photo Gallery