I also have displayed at Duxford and have been alarmed on a number of occasions in the pre display work ups, cowboys seemed an apt discription at times. Why is it necessary to formate, aerobat and stress these old aircraft? The P38 crash was a classic example of what not to do, consequently we have no P38, no Mossie and a few others. Duxford accidents are fortunately rare but they do happen and will continue to happen with unfortunate loss of aircraft and possibly lives, the safest course would be to put away the quasi military displays and just fly the things straight and level.