Mi Amigo - Story of Sheffields Flying Fortress

On a winter's afternoon in February 1944, the peace of Endcliffe Park, Sheffield, England was shattered as an American B17G Flying Fortress bomber crashed narrowly missing playing children; all ten crew died. Miles off course, sister aircraft to The Memphis Belle with its crew drawn from all across America, what was it doing over Sheffield? Who were the crew? How close was Sheffield to a major disaster? What's happened since?