A NASA WB-57F Canberra from NASA Johnson Space Center sits on the airfield Nov. 22, 2013, on RAF Mildenhall, England. The WB-57 is an all-weather, high-altitude research aircraft plane and is transiting through RAF Mildenhall on its way to Ellington Field, Houston. The WB-57 is a mid-wing, long-range aircraft capable of operation for extended periods of time, from sea level to altitudes in excess of 60,000 feet.