Just to set the record straight. The aircraft that mistook Cambridge for Duxford was neither an F.15, or aTornado, but was,in fact, a U,S,A,F RF4C from, either Lakenheath, or Alconbury. It did, in fact, turn up and display 20 mins late, and cited unserviceable nav. equipment as a reason for the error!!!?????? Been very interesting, reading this thread. Brought back many memories, not all good ones. Saw my 11th Airshow accident at Oshkosh Wisconsin this year, sadly fatal. Hope it is the last.