Capt. Aaron Marx (right) demonstrates the capabilities of a KC-135 Stratotanker to Royal Air Force Flt. Lt. Damian Massingham in a flight simulator at Royal Air Force Mildenhall on May 11, 2012. The flight simulator session was part of the European Tanker Symposium, a multinational training event. Marx is an instructor pilot with the 351st Air Refueling Squadron. (U.S. Air Force photo/Senior Airman Rachel Waller)